game_engine. Add quaternion vector rotation.

Add rotate vector method to quaternion.wq
game_engine. Minor stype fixes to game test.

Style fixes to matrix4 test.
Style fixes to game test - add error message to game test preconditions.
game_engine. Add quaternioin vector rotation test.

Add test quaternion vector rotation to quaternion test case.
Add native quaternion vector rotation native test method to jni math.
Add utility methods to support test.
Change vector test vector to string method to a public static method so it can be used by quaternion test.