[WASAPI] fixed: return the right channel layout
[WASAPI] fixed: use the more accurate GetDelay() for Drain().
Merge pull request #169 from wsoltys/aefixes

WASAPI fixes
linuxrenderer: do not render if upload texture fails
vdpau: redesign
vdpau: make interop gl default and remove setting, rename and intvert interop yuv
vdpau: observe ffmpeg tags for color space
vdpau: switch off de-interlacing on ff
linuxrenderer: drop method RenderMultiPass
linuxrenderer: implement progressive weave for vdpau
vdpau: set deinterlacing method to auto, if default method not supported
vdpau: calculate timestamp of second field when doing deinterlacing
vdpau: comment some features that will be added later
renderer: protect against div by zero
vdpau: add fence for detecting when a buffer can be reused
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5
videoplayer: update frametime, it might change due to fps detection