Patch by Sephiroth87

No we won't change the name. Microsoft won't make us change our mind ;)

-Werror haters, scream now.

libvlccore: Explicitely cast our const char *. dooh. We shouldn't store them as char * in the first place if they are not strdup/free().

The object isn't locked at this time. Yet, could some check that we do need that signal. I tend to doubt about that.

lol and thanks Sephiroth!

This is essentially the same problem as --plugin-path (albeit hopefully
with much less disastrous potential effects), with the same
inconvenience for developpers.

Change the toolbar layout to make it smaller and have the advanced buttons on the same line as the other ones.

If you think it was better before, please scream NOW.

I am just bored of being insulted for the work I do/not do. All the decisions may not be optimal, and I am always open to discussion. Insults by mail is NOT OK.

required_argument is not implemented (behaves like optional_argument), and actually crashes in some instances.
This fixes a crash as detailed in #1681.
The problem is filed with Apple as Radar ticket 6113829

mkv: retrieve 2nd seekhead pos, when parsing first seekhead, and add a debug if an Unknown element was seen there.

(Should fix an other bunch of crash report in apple-bugreport).