merged with master
[fixed] moved xoppa's package to top-level g3d package, moved old stuff to g3d.old for reference, removed TextureDict and TextureRef.java
moved and renamed json loader pojos, should be base for new model class.

bullet is currently broken, need to modify the swig stuff.
Merge branch 'new3dapi' of https://github.com/libgdx/libgdx into new3dapi

Conflicts:
	tests/gdx-tests/src/com/badlogic/gdx/tests/utils/GdxTests.java
added first draft of new Model class
merged new3dapi with master
Merge branch 'new3dapi' of https://github.com/libgdx/libgdx into new3dapi
Merge branch 'master' into new3dapi
Use new model
Merge pull request #310 from xoppa/new3dapi

New3dapi, Bullet
Issue 1104: increase consistency in overlaps, intersects and contains
Issue 1104: #intersectRectangles does the same thing as #overlap(Rectangle,Rectangle)
reorder methods
chain individual statements together
some informal tests to illustrate the difference in #contains and #overlaps between the various regions
issue-1104 touching circles do not overlap
issue-1104 points on the border count as 'contained'
issue-1104 touching BoundingBoxes are not 'contained', rewrite BoundingBox#contains in same form as others
issue-1104 add Circle#contains(Circle)
fixed issue 1346, BitmapFonts generated by FreeTypeFontGenerator where leaking...