Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

Let's see if this fits courmisch's standards...

Osdmenu 'dvd' configuration is the same as 'default' configuration and 'minimal' is just a simple example. The 'default' configuration is descriptive enough in combination with doxygen comments.

Rewording of some categories of Preferences, avoid "General" as a title and using "VLC", every other two lines...

Grrr a library that does exit on its own !

Noticed by courmish.

(X11 has a similar bug, not to how to fix it)

It fixes an assert in vout code when a stream was stopped while paused.

It was created as an integer and set as a boolean...

N.B.: libvlc snapshots remain seriously broken.
Vout is not locked when shooting. Variables are not safely set.
Vout thread does not access request field safely.
Multiple requests are not safe either. I probably missed some other
issues.