libz gets installed in lib

[codeanticode]

The library files that result from the compilation of libz (libz.a, libz.dll.a) get copied to the lib folder instead of lib64 in when building for the x86_64 target. Manual copy of these files to the correct folder solves the problem.

[codeanticode]

Maybe this could be handled with a post-installation step in the modules file, that copies the libraries to the right location.

[ylatuya]

I would rather patch the makefiles to use the real libdir installetion path instead of the harcoded one.