Merge branch 'master' into honeycomb-release

* master: (38 commits)
  Stale cache management to address a P1 bug # 3296131.
  Remove WebView leak
  Hide IME Switch Button when a handset is locked.
  Use settings of the visibility of IME Switch button
  Fix bug 3273104 - Fix SeekBar holo style
  Fix bug 3295495 - Wrong menu item selection in PopupMenu
  Measure spinner items for sizing the dropdown view.
  Fix bug 3292288 - Make Action Bar trap taps
  Demo hack!
  Bug 3292797. Talkback accessibility doesn't work at times.
  Fix 3295530: Fix crash in RecentApps when we have no recents
  Fixing leak in StackView
  Add initial support for TAB navigation.
  Fix a constructor declaration to match its definition.
  Eliminate tracked allocations and the inNativeAlloc option.
  Fix 3148496: Update LockScreen clock to use new font.
  Some fixes to the new loader management.
  Updating NumberPicker resources and DatePicker selector color for the Light Holo theme
  AutoLink identified spans are selected when long pressed.
  Tweak action bar show/hide animations
  ...