print proper uniform variable locations when GLSL programs load; other code cleanup
print proper uniform variable locations when GLSL programs load; other code cleanup

runewake2/opengl-examples,JohnRThomas/opengl-examples,JohnRThomas/opengl-examples,JohnRThomas/opengl-examples,runewake2/opengl-examples,JohnRThomas/opengl-examples,runewake2/opengl-examples,runewake2/opengl-examples