SystemUI: fix wrong statusbar background.

If we turned off screen while some panel was visible than
background of PhoneStatusBarView will not be updated because we receiving single
panelExpansionChanged call and after super.panelExpansionChanged mFadingPanel
will be null (onAllPanelsCollapsed cause this).

Allow updating background when mFadingPanel is null.

Change-Id: Ib123f27500790c1b7ec787b7e433372629daa08d
framework: fix screenshot and rotation animation for devices with abnormal hw rotation

port foreward from cm10.1:
https://github.com/CyanogenMod/android_frameworks_base/commit/ac555b9ca9a76d13a26fc9ea40980fe57258761b#diff-d6f7bba268a742c91252cc9e64e2381a

Change-Id: I14b6e2403b9be345a1a591138f8a3a12ca8e4f89

Conflicts:
	services/java/com/android/server/wm/WindowManagerService.java