- Fixed issues related to custom D3D9 Vertex Descriptors.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4624 dfc29bdd-3216-0410-991c-e03cc46cb475
- Unified OpenGL Vertex Descriptor class name.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4625 dfc29bdd-3216-0410-991c-e03cc46cb475