Updated glm

[widberg]

Changes

• Updated glm 0.9.8.4 to glm 0.9.9.5.
• Updated the cubes example.
• Updated deps/CMakeLists.txt.
• Removed deps/glm.cmake.
• Removed bigg::perspective. Use glm::perspective.
• Removed bigg::ortho. Use glm::ortho.

Notes

In this version of glm there is no more default initialization of vector, matrix and quaternion types. Which means that if you want to construct an identity matrix you will need to use glm::mat4 mtx = glm::identity<glm::mat4>(); instead of glm::mat4 mtx;.

I have tested this on Windows and Linux.