Build
Merge branch 'master' of https://github.com/chemicalhead/OpenGL

Conflicts:
	playground/playground.cpp
	playground/playground.exe
	tutorial01_first_window/tutorial01_first_window.exe
	tutorial02_red_triangle/tutorial02_red_triangle.exe
	tutorial03_matrices/tutorial03_matrices.exe
	tutorial04_colored_cube/tutorial04_colored_cube.exe
	tutorial05_textured_cube/tutorial05_textured_cube.exe
	tutorial06_keyboard_and_mouse/tutorial06_keyboard_and_mouse.exe
	tutorial07_model_loading/tutorial07_model_loading.exe
	tutorial08_basic_shading/tutorial08_basic_shading.exe
	tutorial09_vbo_indexing/tutorial09_vbo_indexing.exe
	tutorial10_transparency/tutorial10_transparency.exe
	tutorial11_2d_fonts/tutorial11_2d_fonts.exe
	tutorial12_extensions/tutorial12_extensions.exe
	tutorial13_normal_mapping/tutorial13_normal_mapping.exe
	tutorial14_render_to_texture/tutorial14_render_to_texture.exe
	tutorial15_lightmaps/tutorial15_lightmaps.exe
	tutorial16_shadowmaps/tutorial16_shadowmaps.exe
	tutorial16_shadowmaps/tutorial16_shadowmaps_simple.exe
	tutorial17_rotations/tutorial17_rotations.exe