Merging r6128 through r6139 from trunk to ogl-es branch.

Merging r6128 through r6139 from trunk to ogl-es branch.
Note: I could not merge 2 OSX project files as I'm not sure how to correctly resolve their conflicts.
Maybe old version for those files are still OK, as ogl-es branch got updated once before (leaving trunk behind).
In case it causes problems I hope someone can send another patch for those 2 files:
source/Irrlicht/Irrlicht.xcodeproj/xcshareddata/xcschemes
source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6140 dfc29bdd-3216-0410-991c-e03cc46cb475