macosx: make sure that 'dialog-progress-bar' and 'dialog-login' don't look like aliens from outta space, but normal OS X dialogues

This isn't fully functional, as the callbacks aren't being triggered, although set. Needs some more investigation.

macosx: added 'ffmpeg-skiploopfilter' to the simple prefs too and fixed the postprocessing level setting, as the variable name changed

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

And remove deleted ones
Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

This introduces a lot of dead code, which will be cleaned up later on, but is left there for reference.

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

This fixes a case where our libmpeg2 module was not extracting
Closed Captions from the user_data, when this user_data was in the
GOP header, instead of in the picture header. This information is
retained until the next picture (date) is handled.

See sample "bob-dvd-closedcaptioning works in ffmpeg but not in libmpeg2.ts"

Tweack the rules in po/. Not perfect you can't run make update-po (and
so make dist) if your builddir isn't a subdir of srcdir. And of course
it still putting te .gmo in srcdir

macosx: paste the UDP/RTP MRL to the URL field once the sheet is dismissed so the user can see that the selection actually worked. No functional change.

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>