Irrlicht Engine

Hello!
Irrlicht was not compiling on OS X for a long time, so I finally fixed it. Please get the fixes from my GitHub repository and integrate them into Irrlicht trunk.
Repository: https://github.com/elvman/irrlicht

In upcoming days I'll add new OSX project + some improvements for this platform (for iOS too), anyway thanks for your help

EDIT. This problem is solved in the latest trunk.