Clean up protected apps code (1/2)

- Work with actual ComponentNames instead of converting them between
  String and ComponentName all the time
- Name protection state parameter in methods 'state' instead of
  'protect', as a value of true actually means it's not protected. Also
  consistently use the respective constants for its values.
- Some misc. cleanup

Change-Id: I2855978c8aef3cfa14249e3398039c7cdd145ede
Settings: Don't match action bar parent for search on tablets.

Also adjust IME flags to
a) show the search icon as action key and
b) to not appear fullscreen in landscape

Change-Id: I9bc9851d39aa4d6dbed40df63dd4ea8df6f4c3f9
Settings : Scroll to preference on search and highlight

Change-Id: I93c4106d022b416205cc33cf5dbdf5d7635a002a
Settings: Disable search item in some fragments.

Change-Id: I17ed6945f34f2fe7bb18674124f8a8989145b8c1
Improve search performance.

The normalization regex is slow (5-10ms per entry on mako), so better
pre-cache it. Also cache the icons, as the number of icons is vastly
smaller than the number of potential search results, so they'll be
reused very often.

The regex change alone brings the duration of a single filter run down
to ~20ms from ~1200ms on mako.

Change-Id: Ia0fa9c554d0d585a52c8a2b87eecbf045388c961

Conflicts:
	src/com/android/settings/search/SettingsSearchFilterAdapter.java