Fix a few compilation problems

[O2Graphics]

First: it was trying to download from "http://[url]/mariadb/-connector-odbc-2.0.14/source/mariadb-connector-odbc-2.0.14-ga-src.tar.gz" instead of "http://[url]/mariadb/connector-odbc-2.0.14/source/mariadb-connector-odbc-2.0.14-ga-src.tar.gz" (dash before "connector…")

Second: I don't know where the error comes from, but it needed "mariadbconnector-c" instead of "mariadb-connector-c" for its dependencies. In logs:
"===> mariadb-connector-odbc-2.0.14 depends on package: mariadb-connector-c>=2.3.0 - not found
===> Installing existing package /packages/All/mariadbconnector-c-2.3.1_1.txz"

[O2Graphics]

Also, while installing "mariadb-connector-odbc", I got this warning:
ldconfig: warning: /usr/local/lib/mariadbconnector-odbc: No such file or directory

The package install "/usr/local/libdata/ldconfig/mariadb-connector-odbc", so the Makefile should probably be changed to correct this warning. But I don't know how.

[O2Graphics]

Up, @Sp1l ? :-)

[O2Graphics]

Well, I've just updated to be compatible with mariadb-connector-c 3.0.2 from official ports.

Works perfectly well with MariaDB 10.1.25 + unixODBC 2.3.4 + asterisk13 13.17.0 on FreeBSD 11.0.
Will later test with MariaDB 10.2.x on FreeBSD 11.1.

[O2Graphics]

I've just added OpenSSL/LibreSSL as a depency, or else the command "isql -v MySQL" was throwing the error: "/usr/local/lib/libmaodbc.so: Undefined symbol "CRYPTO_get_id_callback"".

Tested with libressl-devel 2.6.0 on FreeBSD 11.1.

Associated FreeBSD bug report: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218645