display: Disable use of copybit temporarily

 * HWC will optimize drawing with copybit when the device is
   rotated 90/270 degrees as MDP cannot rotate the UI (HWC_BLIT),
   however the version of C2D2 currently available does not support
   fence_sync. This causes tearing when scrolling lists (Play Store,
   etc).
 * Put an ifdef around copybit initialization so HWC uses GLES instead.
 * We can remove this when an updated driver is available.

Bug: QSDB-9
Change-Id: I0d046c89782c7a1ef0d780b78f787d49005c4695
display: Don't enable pixel repeat for YUV buffers

 * This can cause horrible things to happen on msm8660 like clock rates
   going to a zillion hz, hard lockups, artifacts, and the smell of
   fresh ozone in the air. Don't do it.

Change-Id: Ic3b8541fc149c593e46ca5ed0c1ee14cab6af71a
Revert "Revert "libhwcomposer: Don't count video layers marked for SKIP""

This reverts commit 5b9ee9522eff9f43eb13692e2d15f8d500b680a2.
Merge remote-tracking branch 'cm/cm-10.1' into HEAD