minui: Allow devices to blank/unblank using LCD backlight

* Some devices rely on the LCD backlight to blank/unblank the display,
  support them by allowing a custom LCD backlight path to be used.

Change-Id: I8406b4b55cd7a2afc4f8f8ba65de2c53b949489d
recovery: Add a proper CleanSpec.mk

 * Clean all the stuff that conflicts with AOSP recovery.

Change-Id: I175329c446a014c451f4c0fc5a9a4472941afc10
recovery: Clean ALL the things

 * We need to clean everything, otherwise nasty things happen when
   switching to alternate recovery module.

Change-Id: I9ea88179f5329112c587b649328c1c83df0bd5d9
Quickly install from last install path

This patch stores the last path a zip was installed
from and adds a menu option to jump there quickly
when installing new zips.

Patchset 1) initial commit
Patchset 2) remove un-need call to dirname()
            increase install_menu_items[] size
Patchset 3) removed use of stat
            more install_menu_items[] changes
Patchset 4) removed unused variable info
Patchset 5) removed unused variables
            general clean up

Change-Id: I02d2fde26b375fad36dbab50ec2a8b8a52afc003
install zip menu fixes:
    * fix memory overflow if num_extra_volumes = MAX_NUM_MANAGED_VOLUMES
    * simpler to manage install zip menu
    * better ordered listing of volume storage paths

Change-Id: I11d8f76bfe4a60623842810b7bdddd18e5cb99f9