quaternion conversions to and from matrix4 no longer invert rotations. Define IRR_TEST_BROKEN_QUATERNION_USE in quaternion.h allows compile-tests to find affected code (see changes.txt for more info). Loaders for b3d, ms3d, ogre and .X just use transposed matrixes now for downward compatibility - meaning if it worked before it still works - if it was broken before it's still broken. Same for CSkinnedMesh. For collada (.dae) loader this fixed previously wrong rotations.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4276 dfc29bdd-3216-0410-991c-e03cc46cb475