Frameworks: Option to control cursor in text fields using volume keys (1/2)

This feature is moved to framework so it also works with third party keyboards.
Patch Set 3: Added missin @hide statements

Change-Id: I8e20240e7bee5351ab20bb3d701eb95a5fd3e112

Conflicts:

	core/java/android/inputmethodservice/InputMethodService.java
	core/java/android/provider/Settings.java
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
power: Add CPU boosting interface

 * Boosts CPU using Power HAL for the given duration.
 * Duration is given in microseconds.
 * Power HAL must implement POWER_HINT_CPU_BOOST.

Change-Id: Ic79baf7e3d0f75483c2fe8a242b4c3d93368b68b
Add CPU boosting hooks

 * Boost CPU to max during scrolling
 * Boost CPU to max on activity start/resume
 * Inspired by a patch from CodeAuora.

Change-Id: I72f2c2851b01fbceabddead03a4c3a7a0526ca61
"Clear all" button on recent apps

    Ported from ParanoidAndroid by zigackly:
    https://github.com/ParanoidAndroid/android_frameworks_base/commit/f8c44e6ef667a3ebe9b658f148fa78a8d4f9a8dd

    Add button to tablet layout ported from Codename Android by zigackly:
    https://github.com/CNA/android_frameworks_base/commit/8d259fe3588c261baa5a17c361255cf28cc82bfe

    Patch set 2: Make the layout consistent, with the button at the top right.

    Patch set 3: Remove the redundant use of removeTask()

    Patch set 4: Top right layout does not work in tablet mode: make it top left for tablets only.

    Patch set 5: Different implementation (No need to keep track of views) - Danesh M

    Patch set 6: Top left layout no longer works for tablet mode with new implementation.
                 Make it bottom left for tablets only.

Change-Id: Iceb86eef41160f1c17e51463b37fd97e27acfb2e

Conflicts:
	packages/SystemUI/res/layout-port/status_bar_recent_panel.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

Change-Id: I5f3827299866a951e657ce64bea7c5f31c34ef9e

Conflicts:

	packages/SystemUI/src/com/android/systemui/recent/RecentsHorizontalScrollView.java
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
	packages/SystemUI/src/com/android/systemui/recent/RecentsVerticalScrollView.java