linux build

[agraeper]

src/croc/stdlib/helpers/oscompat.cpp +885 openLibrary() is not defined for not(win32)

[JarrettBillingsley]

I guess I never got around to that. I haven't worked on Croc in a long time.

If you're familiar with dlopen/dlsym/dlclose, it should be easy to add linux versions of oscompat::openLibrary/closeLibrary in oscompat.cpp, and oscompat::getProc in oscompat.hpp. Should just be a matter of copying the Windows versions of those functions and changing them to use libdl instead.