Minor cleanup.
Merge branch 'origin/master'

Conflicts:
	gdx/src/com/badlogic/gdx/utils/viewport/DoubleRatioViewport.java
	gdx/src/com/badlogic/gdx/utils/viewport/MinMaxViewport.java
	gdx/src/com/badlogic/gdx/utils/viewport/MinMaxViewportBase.java
Minor cleanup.