camera: allow setting video-size before recording starts

Needed for some samsung cameras.

Change-Id: Ia0f5716d5e6815d249040b08313482a103a36863

Conflicts:
	res/values/config.xml
	src/com/android/camera/CameraSettings.java
	src/com/android/camera/VideoModule.java
	src/com/android/camera/util/CameraUtil.java