Allow purging of asset bitmaps

It seems that neither CM9 nor CM10.x includes the actual framework-side
code to facilitate user-controllable bitmap purging. Odd, since the
CyanogenMod Settings app in both CM9/CM10.x includes the option.

Backported from original Gingerbread commit:
http://review.cyanogenmod.org/#/c/3908

Original description:

Allow the system to reclaim more free RAM when needed on 'low' memory devices
(e.g. Droid/Milestone) that are struggling with 2.3. This option enabled
efectively restores the froyo way of forcePurgeable BitmapFactory asset
handling.

Change-Id: I6a3b8a05b7be9c214a8548d6c6d1621e6533a1e0
No. No. Don't commit this.

This reverts commit f237dec187d79de1fd6af9a457cce017638ebd30.
Fix aliasing and C++11 issues.

frameworks/base: Fix various aliasing violations

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>

frameworks/base: Fix aliasing violations

Fix violations of strict aliasing rules

Change-Id: Ia83db6a0be18f52e8f274c581c3b42f031b39247
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>

frameworks/base: Fix build in ISO C++11 mode

Fix various incompatibilities with ISO C++11:
- Assumption that char16_t is defined to uint16_t
- constexpr usage
- macro constructs that could be interpreted as string literals
- enum typesafety

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Signed-off-by: Evan McClain <aeroevan@gmail.com>

Conflicts:
	cmds/stagefright/SineSource.h
	core/jni/android/graphics/TextLayoutCache.cpp
	core/jni/android_util_Binder.cpp
	core/jni/android_view_KeyCharacterMap.cpp
	libs/gui/SurfaceTexture.cpp
	media/libstagefright/OMXCodec.cpp
	services/audioflinger/AudioResampler.h
	core/jni/android_server_BluetoothEventLoop.cpp

Change-Id: I185b97f07e89bed93b92546bc0fdf895bd0cc92d

Conflicts:

	core/jni/android/graphics/TextLayoutCache.cpp
	core/jni/android/graphics/TextLayoutCache.h
	core/jni/android_os_FileUtils.cpp
	core/jni/android_server_BluetoothEventLoop.cpp
	core/jni/android_view_Surface.cpp

Signed-off-by: Stevespear426 <stephen.k.spear@gmail.com>
Change-Id: If0a59e0bd6a89025dd7e0a0efaaf8d55a952ef34
Merge branch 'jb-mr1' of https://github.com/Root-Box/frameworks_base.git into jb-mr1