Graphics: Add a new TextureManager for Ogre
Graphics: Add a new CursorManager for Ogre
ENGINES: Hook up the new CursorManager
GRAPHICS: Convert our old PixelFormat to Ogre's
GLEW: Remove GLEW

We don't need it anymore; we use Ogre for OpenGL stuff.
GRAPHICS: Reintroduce dumpTGA for textures
GRAPHICS: Add TextureManager::getInvisible()
Graphics: Add a MaterialManager for Ogre
GRAPHICS: Add an Ogre frame listener to advance animations
COMMON: Add functions to generate unique number IDs
COMMON: Add StackException::isEmpty()
COMMON: Add copy-constructor for std::exception to StackException
EVENTS: Handle exceptions thrown in functions forced into the main thread
GRAPHICS: Add a MaterialDeclaration

Allowing more complex materials.
GRAPHICS: Add a SceneManager for Ogre
GRAPHICS: Add creating a simple rotating cube
GRAPHICS: Start re-adding support for NWN model loading
GRAPHICS: Add a new CameraManager for Ogre
GRAPHICS: Add FPS / frame time calculation
EVENTS: Fix a case of reading uninitialized data