Revert "memoize activity manager graphics acceleration check"

This reverts commit 4099dde20c18746437afc198f833f0425b39cc59.
CameraTile: Launch default gallery app when long pressing active camera tile

Currently long pressing this does nothing. It makes sense to launch the default
gallery app from here if a user long presses in order to see pictures that
they've taken from the smaller camera preview.

Change-Id: Iad73a291443eb2a12e1399f24eeeec61ec945bf5
SystemUI: prevent NPE on clear recents double press

Pressing Clear all button twice fast or while the list
is clearing but not yet fully cleared causes sysui to crash due to
mRecentTaskDescriptions being null: (http://pastebin.com/2gRFvf8k)

Workaround it by hiding clear all recents button.

Change-Id: I23d10edfd336041739fe80352ee01987e671dbd7
listview: ensure active views are filled prior than scrap views

The internal Recycler#fillActiveViews should be called prior to add any view
to the scrapViews queue, so it can be use safely without detaching views
because out of sync.

Change-Id: Ie119ad871a89e0a3fa1e07e955fcd5ca7b171f46
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
hwui: Always enable the scissor while composing layer

Due to scissor optimization feature added in KK, scissor was disabled
all the time. Hence the undefined areas/region of textures are not
masking properly with GL_LINEAR filter mode.

Change-Id: Ifbbde2c67a4c01e45eda07ada709e066255fffcb
CRs-fixed: 645077
QS: New torch icon

Create a new torch icon which can be used across the system
(Quick settings, Quick launch, Torch app).

Screenshot: http://goo.gl/V5S8LC
Vector graphic: http://goo.gl/NvjZuM

Change-Id: I4ddf97847d4488d1c344d50b5755a67537f6a126