This directory should contain MESA library for OpenGL

MESA for win32 you can download here: 
http://sourceforge.net/projects/msys2/files/REPOS/MINGW/i686/mingw-w64-i686-mesa-10.6.5-1-any.pkg.tar.xz/download

MESA for win64 you can download here: 
http://sourceforge.net/projects/msys2/files/REPOS/MINGW/x86_64/mingw-w64-x86_64-mesa-10.6.5-1-any.pkg.tar.xz/download
