Some few improvements
adding vlm
Merge commit 'a84e0c05e492d91e98d530a371ff0ff4088a8d16'

Conflicts:
	FCG.pro.user
	glm/CMakeLists.txt
	glm/detail/dummy.cpp
	glm/detail/func_common.inl
	glm/detail/func_exponential.inl
	glm/detail/func_geometric.inl
	glm/detail/setup.hpp
	glm/detail/type_half.inl
	glm/gtc/quaternion.inl
	glm/gtc/ulp.inl
	glm/gtx/color_space.hpp
	glm/gtx/color_space.inl
	glm/gtx/euler_angles.inl
	glm/gtx/fast_square_root.inl
	glm/gtx/quaternion.inl
	glm/gtx/simd_quat.hpp
	glm/gtx/simd_quat.inl
	glwindow.cpp