LoadOBJ can now load objects with having no texture coordinates or
objects having texture coordinates specified as tuples.

Generates:
Win32:  raylib.dll, libraylibdll.a (import library)
Linux:  libraylib.so

This fix allows GenMeshCubicmap() to create cubic maps having cells of
arbitrary sizes.

Fixed use-after-free in DestroyLight

Exposed Texture2D.id to Lua
Lights now have settable/gettable fields

Simplified module for Music and AudioStream
Added support for raw audio streaming (with example)

Added compound literals (C99) alternative for C++ compilers that don't
support this feature

Still some work left...

Many thanks to Marcelo Paez (paezao)

Well, not tested yet but it should work...