- Fixed active camera scene node registering itself twice (This causes anything parented to the camera to get drawn twice, potentially a major performance issue). Scene manager now calls "render()" to update the active camera's matrices prior to doing culling, rather than OnRegisterSceneNode.
 - Fixed the object-space lighting normal mapping/parallax mapping bug in OpenGL. Parallax offset still looks a bit weird in OpenGL compared to D3D IMO.
 - Fixed a compile warning in D3D9 driver.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2775 dfc29bdd-3216-0410-991c-e03cc46cb475