Added reference Ogre axis system
Added min and max to Numeric
Refactored MyGUI::Widget* printout
Removed useless include
First commit for steelassert.h
Finished integrating MyGUI::TreeControl, added a TreeControlItemDecorator to implement missing parts of TreeControl without changing too much of the original implementation (for easier updates from upstream), also, updated MyGUIFileTreeDataSource interface to remove dependency on root string.
Updated doc