Add Andy's ear wiggle to recovery

This brings Andy's ear wiggle from aosp recovery
and adds more transparency to let the background
show through.

Patchset 1) Initial commit
Patchset 2) fix rounding issue that lead to
            one pixel offset issue

Change-Id: I6211c5577d54f20abe5ebadb286e101c713f31e5
Merge "Add Andy's ear wiggle to recovery" into cm-10.2
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_bootable_recovery into HEAD