(My fault - fortunately, sout_AccessOutControl was unused)

It also add checks against failed malloc.

The option value should be escaped by \ for the mentionned characters and
only for them (and only one time).

For example
 dst="test \"ok\".mp3"
will assign the value
 test "ok".mp3
to the option dst.

The following one
 dst="c:\test\\'bla'bla.txt"
will assign the value
 c:\test\'bla'bla.txt

You can use the functions
- config_StringEscape (allocates memory)
- config_StringUnescape (does not allocate memory).

It fixes at least SVQ1 segfaults.

This reverts commit 48079eea.
I410 is 9 bits per pel, it is ffmpeg doing something wrong.

Was missing from [629f5752]

vlc_join will cause the assertion failure with pthread.
On -unchanged- Windows, it (supposedly) deadlocks as it used to.

The only user is LUA, inlined there. The return value seems suspicious
by the way.

(Hopefully-would-have-been-Signed-off-by: Pierre d'Herbemont)

It fixes aspect ratio of saved picture (and internal ones).
It fixes aspect ratio of displayed PIP (with and without overlay).
It factorizes a bit the code.
It adds a few checks on malloc.