Denoise (hqdn3d) optimizations.

Based on http://git.libav.org/?p=libav.git;a=commit;h=85e228c by Loren Merritt.

Patch by BradleyS. Thanks!



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5857 b64f7644-9d1e-0410-96f1-a4d463321fa5
Denoise (hqdn3d) performance improvements.

Based on http://git.libav.org/?p=libav.git;a=commit;h=0f583e6 by Loren Merritt.

Patch by BradleyS. Thanks!



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5858 b64f7644-9d1e-0410-96f1-a4d463321fa5