Qt: Remove the lines separating the channels in the EPGView widget as they are not displayed properly.

lavc's is marked as experimental

It seems that some avcodec decoders release frames even after being flushed.

It (probably) happens only when the video is non mod 16, or non mod 32
with YV12 hardware surface.

Signed-off-by: Laurent Aimar <fenrir@videolan.org>

Used SetCapture/ReleaseCapture to emulate what x11 seems to do by default.

It is not limited to win32.

Add a channel list widget at the left of the EPGView widget.
Remove the splitter on the EPG window.

This reverts commit eca93931.
and fixes taglib compile

This reverts commit 61db9aad.

untested

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Matroska : Set default compression type for the ContentCompAlgo element to 0 (indicating zlib). Some muxers (for example mkvmerge v4.0.0) do not write ebml elements which correspond to the default values (as defined in the spec).
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Use currently unused code to sort subtitle lines after they have been loaded.
Closes #3734.

It should improve the transition.

As a side effect, window class names are now uniques (process wide)
allowing to unregister them and so to unload properly the msw vouts.