Configurable 0, 90, 180 and 270 degree rotation

Change-Id: Ia1859c51d71ef9d01cec2d13c6468ed89c6ac53e
Contributor: jonasl

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

- Add system setting

Change-Id: Ia7bf8cb64258e1d602230a8f9ea227d3b56a4dab