-Changed from using layout qualifiers to glBindAttribLocation to support older OpenGL versions
Changed std flag from 'c++11' to 'c++0x' to support Ubuntu 12.04
-Merge for supporting lower OpenGL versions (3.0+)
Merge branch 'pmx-opengl300'
Resolved merge conflicts
Fix Bug "Converter.h not found".
Resolved merge conflicts with Converter.h in include/libmmmp.h
-Fixes for OpenGL 3.0 after merge
-No longer specify GLFW_OPENGL_VERSION_MINOR so that 3.0 users can use 3.0, and 3.2+ users can use 3.2+.
-Restored texture2D() funcs back to texture() (texture2D is deprecated)
-Revised configure.ac to check for either Apple or Linux/mingw OpenGL header file locations
-mingw bullet location should be /usr/include/bullet in configure.ac