Disable multithreaded dexopt by default

* There is still a race condition here.
* Power users can re-enable this by setting
  persist.sys.dalvik.multithread to true

Change-Id: I03686bafbac1859695466fcb522bc5436ec82e0d
Revert "cm: Add some app-specific performance settings"

This reverts commit 34d5e908433ce79e1c7fbcb88cf1661a4adb1743.
Clean up

- Remove CM Updater
- Remove CM Wallpaper
- Remove LockClock
Persist DPI & Xposed across flash
New bootanimation