Treat MinGW CMake installation paths as Unix instead of MSYS

[antoniovazquezblanco]

Based on @Biswa96 review on #413, a better fix is proposed.

Sorry about the double PR! :)

[antoniovazquezblanco]

Ping :)

[antoniovazquezblanco]

Ping @ncorgan :)

[guruofquality]

seems almost like WIN32 doing set(CMAKE_LIB_DEST cmake) is just the odd man out and maybe should go away. I dont know if this is still the default search path thing for a visual studio install. Or maybe they should all just be set(CMAKE_LIB_DEST ${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME})

But for now in the spirit of just fixing this for MINGW, should this have been UNIX OR MSYS OR MINGW?

[antoniovazquezblanco]

@Biswa96, what do you think about @guruofquality suggestion?

Thanks

[Biswa96]

But for now in the spirit of just fixing this for MINGW, should this have been UNIX OR MSYS OR MINGW?

I do not know if this project supports msys or cygwin environment. At least, the above suggestion would not hurt mingw. So, it's ok I guess.

[antoniovazquezblanco]

Done

[antoniovazquezblanco]

Thank you very much!