Add fallback to img_resample based plugin if swscale isn't available on the system. img_resample will be built as a seperate module than avcodec to prevent avcodec from refusing to dlopen if img_resample is unavailable (debian...).

Acked by DBus code maintainers

This module scales with nearest neightboor algorithm ... lower it's capability score so that swscale will be used if available instead.

Simplify scale and chroma conversion code a lot. Remove native croping, padding and 'canvassing' support for transcode. Those will be availble through transcode's vfilter chain in the near future.

Port chain filter to new API. Now supports chaining of chroma conversion and scaling operations. Integration of crop/padding still needs to be done. This might need to be moved in the core.

Split ffmpeg module in avcodec (decoders, encoders, deinterlacing), avformat (demuxers, muxers), swscale (scaling, chroma conversion) and postproc modules.

Do not use knowledge about the FFmpeg version in transcode.

With the mutex patch plus a few fixes.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

This could trigger some interface bugs, especially if they handle their callbacks carelessly. Revert if you have issues, but also consider to fix your interface.

libvlccore: "intf-show" is now a libvlc var instead of a playlist var. This removes a vout->playlist dependency.

Add ENABLE_NLS define, and make po files optional
Update source files to latest modifications
Add missing function checks
Define QT4LOCALEDIR
Require ncurses (I will submit a patch to cmake to check for ncursesw)

Note that an upper limit should be set anyway