Fragment Support

[mkonecny]

Seems like this feature/branch was removed even though I can still find it here:

https://code.google.com/p/andengine/source/browse/src/org/anddev/andengine/ui/fragment/compat/BaseGameFragment.java?r=0d0d2bcda2941e5b6bf6b56a42dffbc4693fb96e

Any reason for it's removal?