Vector3#toString to match Vector2.
SelectBox refactoring.

* Now fires change events correctly.
* Moved select box list functionality to SelectBoxList, code clean up.
* Better way of hiding select box list, list being open doesn't stop input events elsewhere.
* List reverts to selected item on mouse exit.
Merge remote-tracking branch 'origin/master'
Javadoc.
Add TextureRegion support to TextureAttribute, see #2321
Optionally set pointlight[].intensity, closes #2325
Oops, need to use NumberUtils for GWT
small namechange
Merge branch 'master' of https://github.com/libgdx/libgdx into iap
GdxPay: Documentation update for offer.
GdxPay: documentation update for PayTest.java.