Added new constructor and setter for Vector3
Override equals and hashCode on FileHandle

FileHandles having the same type and path should be considered equal.
Merge pull request #827 from xoppa/3dapi

Small changes to MeshBuilder
Added a new method to get the angle and axis
better use gdx
Separate custom code
Separate java files (swig generated)
Split wrapper (swig generated)
Update swig files
Update gdx-bullet project
Unused fields.
Javadoc
Merge branch 'origin/master'
Added HorizontalGroup, spacing.
Cleanup build scripts
Update VS project
Update tests
Fixed alignment.
Small fixes
getLogLevel() in Application interface