CMeshManipulator::createMeshCopy creates new meshes which have copies of the actual meshbuffers instead of copying everything into SMeshBuffers (which didn't support 32 bit or any of the other special features).
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6335 dfc29bdd-3216-0410-991c-e03cc46cb475