We were accessing some main interface variables from random threads
without serialization. This simply moves the blocking connection signal
from sole size setting to the whole video widget request call. In the
process, we can remove two signals. We still need a blocking connection
signal. It does not add any new deadlock case, since there was already
blocking connection signal in the same call and in the same direction.

(Otherwise we would be in trouble whenever VLC crashes)

Remove repeated code

The call was broken, but still worked, but only half-way...

Remove the ShowIntf module. It doesn't make sense when MacOS and Qt gui have a fullscreen controller.

Fix build on Win32

This patch fixes the crash when a node is selected together with it's children and then deleted
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

There is a slight ambiguity as to what VOUT_WINDOW_SET_SIZE should do
when in full-screen mode though.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Drop enabled only inside Playlist and Media player, not Podcast and
other Internet sources...
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

(This does NOT fix the RC pause deadlock)

mad.pc is a nice debian addition... Pfff @ other distros.

This reverts commit c5a8c459.

Current description on default mode ain't actually any good, but didn't
find better from x264 commit-log. Feel free to add better description.

video_filter/canvas: various aspect-ratio related fixes

 - Remove silly defaulting to 4:3.  Instead, compute PAR based
   upon SAR of input video and canvas size.
 - Update documentation to remove ambiguity over what is meant
   by aspect-ratio
 - Fix subpicture calculations to
    (a) be much simpler,
    (b) correctly calculate width and height
Signed-off-by: Ilkka Ollakka <ileoo@videolan.org>