- triangle3d::isPointInsideFast now using some epsilon to catch all points on the borders.
- triangle3d::getIntersectionOfPlaneWithLine calculates now with higher precision for more exact results.
- triangle3d::isOnSameSide (used by isPointInside) calculates now with higher precision and uses some epsilon to make it work with larger integers and less floating point troubles. Slightly slower now.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4183 dfc29bdd-3216-0410-991c-e03cc46cb475