vdpau: move cropping of top and bottom lines to renderer
X11: adapt to changes in cstdstring
dvdplayer: fix failed to get stream message, lookup streams the same way as getting the index
omxplayer: fix failed to get stream message
ffmpeg demuxer: faster channel change for PVR addons without internal demuxing
(such as MediaPortal, ArgusTV, MythTV, NextPVR)
Credits: FernetMenta, Davilla, Popcornmix
ffmpeg demuxer: refactoring for fast channel change
ffmpeg demuxer: reduce time for finding stream info
ffmoeg demuxer: make sure we start video with an i-frame
VSync: Drop OML Swap Method
VSync: Prefer Mesa Swaps to SGI Swaps
X11: use GLX_EXT_swap_control if available
ffmpeg demuxer: short anylyze time for mpegts, squash me