Adapted 02 to Intel/Mesa/GLFW3

* OpenGL context: 3.2 -> 3.1
* Shader version: 1.50 -> 1.30
* Window: GLFW2 -> GLFW3
* Fully managed by premake4
Adapted 03 to Intel/Mesa/GLFW3

* OpenGL context: 3.2 -> 3.1
* Shader version: 1.50 -> 1.30
* Window: GLFW2 -> GLFW3
* Fully managed by premake4