Themes: Fix handling of overlay packages in AssetManager

The new theme engine did not handle the fact that a legacy
theme contained one package ID that was being used for both
framework and 3rd party apps.  This caused some issues with
styles not bein properly loaded from legacy themes.  Missing
action bars in some apps was the most noticable side effect
of this problem.  This patch takes this into account without
affecting themes using the new format.

Change-Id: I89b3dbf71db925726b949511a7e34a0d2949deab
FWBase: Audio Themes Support [1/3]

Change-Id: I698acc3e7843dcb38ba545219a21e9bee0b2fbe6
Signed-off-by: STELIX <ssspinni@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	media/java/android/media/AudioService.java
Revert "FWBase: Audio Themes Support [1/3]"

This reverts commit b1e12d9f9e2648f11f5106132a376940835e4a95.