Updated some documenation.
Added a missing TextEditor colour setting to the L+F.
Improved some misleading example code for ScopedLock.
Minor clean-up.
Avoided an unnecessary call in win32 openGL that may have been causing problems with some Nvidea drivers.
Stripped out all the old openGL fixed-function code, and hard-coded the assumption that it'll be running on hardware that's capable of running GLSL.