Fesapi won't build if environement variable CMAKE_BUILD_TYPE is set tu Debug

[XL64]

It's more a minizip issue but I'll document it here:

If CMAKE_BUILD_TYPE environment variable is set CMake will use it.
If it is set to Debug, minizip will change it's lib name as libminizip_d.a instead of libminizip.a.
Then fesapi won't link because it looks for libminizip.a

[XL64]

F2I-Consulting/fesapi#317

[klevzoff]

Also #219

(the workaround is: don't use env variables to set build type)