* NEW: Add dependency to glew library.
* NEW: New method Gl.GetString() for Gl.GL_VENDOR, ....
[GB.OPENGL.GLSL]
* NEW: New component to use shaders.
- Some code cleanup, add add more constants support for Gl.GetXXXX
- Still missing some features to plainly use shaders, not fully tested
but it's building fine :-p
git-svn-id: svn://localhost/gambas/trunk@2510 867c0c6c-44f3-4631-809d-bfa615b0a4ec