Should repair skins options.

Currently requires the postproc module to be loaded if you want it to work.

Switch back to quartztext, and use the NSFontPanel.

(cherry picked from commit 7749487f9a3f90bc43f8c2f33b253590d12eede3)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

I tried to split most classes in relevant files.
I regrouped classes when they were very tightened to each other
(in chapters and chapter_command for example )

Note that git doesn't detect correctly the files on this.
git blame -C -C is your friend.

 It was a big race condition, please understand how multi-thread works before
touching core files.
 Do not throw away the few first subtitles.

Fixes opening podcasts like http://feeds.feedburner.com/Terravideos

avformat: attachments should still be treated as tracks. this fixes [8c5a9c72]

audiofilters: Do not try to insert user audio-filters when our target is SPDIF. We currently have no way to apply any of our filters to the encoded signal.

Moreover, use a function instead of a macro (like in 0.9-branch)
Partially cherry picked from commit 73ab1cd94773956e463009088bf5f477cec1ae80

And only fonts so far.

Do not move an already rendered subtitle.

It will allow detecting stupid typos.