* Unused variables.
* Missing newlines at ends of #included files.
* signed int loop variables where the termination condition is an unsigned 'get number of' function.
* 'NULL' used inappropriately for an integer or character constant (NULL is a pointer)
* abstract base classes with no virtual destructor.
* Floating point constants used to initialise integer variables.
* Arranged to avoid reading/writing textures at same time.
* Removed depth and stencil buffers from FBO's.
* Eliminated 1-component FBO that caused grief for FBO completeness test.
* Added back missing cubeShaderNoTexture.vert