Update reference images.

#5 is texture drawing using vertex array objects and no immediate mode OpenGL (fc832d45bff05150e299346db197bf0a02bf1e3b)

#6 is almost all immediate mode functionality removed (at least in the QuickFont namespace) and using a shared render state across all QFont instances (2711acc47a8d4f5ce92037f44b1ec212ec267fe2)