Revert "Revert "Camera: Add camcorder pause feature""

This reverts commit 337cbd4682bbf7c86b6a702df5ab0250d3ff93b4.
camera: Fix continuous focus for HDR

 * This patch makes HDR mode suck quite a lot, and doesn't appear to be
   necessary any longer according to the examples given.

 * Reverts this change: http://review.cyanogenmod.org/#/c/45730/1

Change-Id: Ib378a0ba91617ba7ec5d72473d1fce384cf1cce7