Gorilla 2D graphics and console

Betajaen's Gorilla 2D library has been integrated with Ainur.

It's a nice and fast 2D graphics library that I'm going to use in order to replace Ogre's overlays and maybe in the future it will also be useful for a GUI library to be used in place of CEGUI.

Ainur needs a lightweight GUI library and I'm not a friend of too many external dependencies, also CEGUI is a bit hard to build due to its build system.

Thanks to Gorilla, we now have a new nicer Console with coloured output.