dxva: fix and rework video surface handling
dxva: let renderer control the render buffers
dxva: flush ffmpeg buffers if it holds any refs on close
renderer: rename/correct GetProcessorSize, processor is not exposed anymore
dxva: disable hq scalers for dxva rendering, it fails on NVdia. 3c31288b4708db2a2c9cc2dbd2b58de30f41290d
dxva: never try to open more than a single hw decoder on ati HD 2xxx and HD3xxx
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection
dvdplayer: allow rewinding at end of stream, do a seek after rewind
dvdplayer: observe pts counter overflow
dvdplayer: avoid short screen flicker caused by unnecessary reconfigure of renderer
vdpau: advanced settings for auto deinterlacing
player: fix rewind
fix incorrect display of fps when dr kicks in
ActiveAE: slightly reduce buffer size
Revert "vdpau: comment some features that will be added later"

This reverts commit e00b4f65864d623ab4d2e9e5c06db138e661f1cf.
ffmpeg demuxer: faster channel change for PVR addons without internal demuxing
(such as MediaPortal, ArgusTV, MythTV, NextPVR)
Credits: FernetMenta, Davilla, Popcornmix, Whaupt
DVDFactoryDemuxer: skip streaminfo for udp tcp and pvr-channels