Mathutils doc improvements + other small things

- bpy.app moved into PyStructSequence (used by sys.float_info)
- added buildinfo into bpy.app.build_*
- bpy.ui removed (wasnt used)
- include external example files in Mathutils docs (only Mathutils and Vector are currently written)
- added support to auto document PyStructSequence's
- CMake had "'s inside all its strings.

source/blender/python/generic/BGL.c

@@ -33,7 +33,7 @@
  * allowing script writers to make OpenGL calls in their Python scripts. */
 
 #include "BGL.h" /*This must come first */
-
+#include <GL/glew.h>
 #include "MEM_guardedalloc.h"
 
 static int type_size( int type );