Added support for mingw-w64 cross-compilation.
Fixups for GL_KHR_robustness support.
For Pelles C compiler, _GL_H check

https://sourceforge.net/p/glew/bugs/254/
Merge pull request #16 from BryceMehring/master

Added support for mingw-w64 cross-compilation.
Update snapshots available for download
Merge https://github.com/nigels-com/glew.git into master HEAD at Thu Sep 18 17:44:12 GMT 2014