OpenGL 3.1 and 3.2 samples

OpenGL 3.1 and 3.2 code samples are available to document the OpenGL API. These samples do not use any deprecated OpenGL code, and are aim at getting you started with the most recent API. As you know, version 3.1 of the standard changed drastically the API by deprecating all fixed pipeline and left us learning an almost different OpenGL.
This project is using SDL 1.3 beta, GLM 0.8.4.1 as a math library and a replacement for deprecated OpenGL fucntions and GLI 0.1.1.0 to load images.