Rectangle: Format fix
tutorial/HelloBakge: Fix bit on Windows OpenGL version checking
Mesh: ClearBuffers returns BGE_FAILURE if no buffers allcoated
Mesh: CreateBuffers log messages
Fix compile issues with shapes.

When this gets merged into develop-0.2.0, it will be re-patched.
Merge branch 'develop-0.1.x' into develop-0.2.0
Re-patch of recent, incompatible upstream fix

Shape::NumTriangles->NumIndices
Geometry: DrawInstanced() declaration and empty implementation
Geometry: DrawInstanced() Implementation
Font: Add Glyph struct declaration
Add Stamp class for text rendering
Add GlyphLibrary class for managing baked glyph maps
Add GlyphMap class
Font: Bake accepts a GlyphMap, which now behaves like a Texture
GlyphMap: Add getters for various data
GlyphMap: Add Extract method (get glyph data)
Stamp: Define Pick(const Glyph*)
test/font: Add Stamp variable
Stamp: Protected constructor, add factory method
Stamp: No longer overloading Bind/Unbind/Draw