xlint: check if nocross or broken have value of 'yes'

[JamiKettunen]

This started when I saw this output trying to cross-build some software after adding a new build-time dependency:

=> ERROR: rrdtool-devel-1.7.2_11: cannot be cross compiled...
=> ERROR: rrdtool-devel-1.7.2_11: yes

Both nocross and broken should give some hint or buildlog link as to why they're not being built as per https://github.com/void-linux/void-packages/blob/master/Manual.md#optional-variables.

There's also >150 packages currently just setting it to yes as per my test run of xlint $(find srcpkgs -name template) | grep 'nocross should briefly describe the build failure or link to a buildlog' in an up-to-date void-packages clone:

Clock to show/hide the 155 package results

srcpkgs/bacon/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/crawl/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/argyllcms/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/amdvlk/template:43: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-x86_64-w64-mingw32/template:39: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc64-linux-musl/template:31: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc-linux-gnu/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/bk/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-mipsel-linux-musl/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/0ad-data/template:12: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/coccinelle/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/clisp/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-none-eabi-binutils/template:34: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-linux-gnueabi/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc64le-linux-gnu/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc64le-linux-musl/template:31: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/bup/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/c-client/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/crimson/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-x86_64-linux-gnu/template:26: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-armv7l-linux-gnueabihf/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-none-eabi-libstdc++/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-or1k-none-elf-binutils/template:34: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-linux-musleabihf/template:30: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/debug-me/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/FreeRADIUS/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cabal-install/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cgrep/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/camlp5/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/calibre/template:33: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/MoarVM/template:19: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/R/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/apache-ant/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/crawl-tiles/template:20: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-linux-gnueabihf/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-linux-musleabi/template:30: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-arm-none-eabi-gcc/template:22: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-i686-pc-linux-gnu/template:26: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc64-linux-gnu/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/bglibs/template:12: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/coq/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/crash/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-aarch64-linux-gnu/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-aarch64-linux-musl/template:30: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-armv7l-linux-musleabihf/template:30: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-i686-linux-musl/template:29: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-mips-linux-musl/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-mips-linux-muslhf/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-mipsel-linux-muslhf/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-or1k-none-elf-gcc/template:22: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpc-linux-musl/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpcle-linux-gnu/template:27: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-powerpcle-linux-musl/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/cross-x86_64-linux-musl/template:29: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/darcs/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/fpc/template:40: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gscan2pdf/template:20: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gerbil/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/hivex/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ghc/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/go1.12-bootstrap/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/givaro/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/handbrake/template:26: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/hoogle/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ftjam/template:5: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gcc6/template:28: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ghc-bin/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gnugo/template:12: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/dev86/template:11: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/emacs/template:30: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/es/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ghdl/template:20: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ghidra/template:69: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/git-mediate/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/hlint/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/dmd2.091/template:26: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/firejail/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/fvwm3/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gnushogi/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gprolog/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/fvwm/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/git-annex/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/gzdoom/template:21: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/juCi++/template:22: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/fflas-ffpack/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/mupen64plus/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/linbox/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml-findlib/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ispc/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/libguestfs/template:29: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/mandrel/template:24: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/linux-tools/template:43: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/mplayer/template:26: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/nethack/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/kmonad/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/kubernetes/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/hledger/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/msrc_base/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ksh/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/dsda-doom/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/libreoffice/template:7: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/nqp/template:19: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml-zarith/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/sympow/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/pingus/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/schilytools/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/supermin/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/vagrant/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk16-bootstrap/template:48: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/xcolorsel/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/pcc/template:21: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/utox/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/perl-DBD-Pg/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/sbcl/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk13-bootstrap/template:46: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/polyml/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/sam2p/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/webkit2gtk/template:86: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/plan9port/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/rox/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/telepathy-gabble/template:20: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml-num/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/tracebox/template:24: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/xf86-video-mach64/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk7-bootstrap/template:84: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/stack/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk12-bootstrap/template:46: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/splint/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/urbanterror/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/xonotic/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/tcc/template:18: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/vscode/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocamlbuild/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/rrdtool/template:23: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk15-bootstrap/template:48: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml-camlp-streams/template:13: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/pandoc/template:35: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/pdftk/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/rtags/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ocaml-stdcompat/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/rakudo/template:36: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/shellcheck/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/msp430-toolchain/template:17: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/zig/template:16: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk10-bootstrap/template:55: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/ntl/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/xmobar/template:23: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/xvkbd/template:14: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk9-bootstrap/template:71: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/python3-cysignals/template:15: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/sysdig/template:25: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/openjdk14-bootstrap/template:45: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/schroot/template:57: nocross should briefly describe the build failure or link to a buildlog
srcpkgs/opam/template:18: nocross should briefly describe the build failure or link to a buildlog

Similarly for broken should briefly describe the build failure or link to a buildlog there only was a single result:

srcpkgs/mac-fdisk/template:17: broken should briefly describe the build failure or link to a buildlog

[classabbyamp]

would be nice to have broken be checked for the same thing