- Changes for D3D9 texture code (at now it looks like OpenGL texture code). Those changes was required for upcoming cubemaps support.
- Minor improvements in COGLCoreTexture.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5237 dfc29bdd-3216-0410-991c-e03cc46cb475