Merged from 1.5 branch to trunk, all changes from 2042 to 2071. cursor setVisible fix, OSX FPS cam fix, ALPHA_CHANNEL_REF fix, new method draw2dRectOutline, setOverrideFont fixes, getCollisisonPoint distance bug fix.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2072 dfc29bdd-3216-0410-991c-e03cc46cb475