Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Close #2900

- video.marquee.enable()        : enable marquee filter
 - video.marquee.disable()       : disable marquee filter
 - video.marquee.text("my_text") : display my_text on screen
 - video.marquee.color(i_val)    : change text color
 - video.marquee.opacity(i_val)  : change text opacity
 - video.marquee.position(i_val) : change text position (center, left...)
 - video.marquee.refresh(i_val)  : change refresh time
 - video.marquee.size(i_val)     : change text size
 - video.marquee.timeout(i_val)  : change timeout
 - video.marquee.x(i_val)        : change abscissa position
 - video.marquee.y(i_val)        : change ordinate position
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

- video.marquee.enable()        : enable marquee filter
 - video.marquee.disable()       : disable marquee filter
 - video.marquee.text("my_text") : display my_text on screen
 - video.marquee.color(i_val)    : change text color
 - video.marquee.opacity(i_val)  : change text opacity
 - video.marquee.position(i_val) : change text position (center, left...)
 - video.marquee.refresh(i_val)  : change refresh time
 - video.marquee.size(i_val)     : change text size
 - video.marquee.timeout(i_val)  : change timeout
 - video.marquee.x(i_val)        : change abscissa position
 - video.marquee.y(i_val)        : change ordinate position
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Fix description inversion as Nicolas Rault described on @vlc.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Laurent Aimar <fenrir@videolan.org>

Signed-off-by: Rémi Duraffort <ivoire@videolan.org>

created or destroyed). We also don't need to delete the variable (they will be
destroyed).

modifying anything).

libvlc_vlm_release : release events stuff Centralize vlm release operations in one new function : libvlc_vlm_release_internal
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

callback instead).

Fix segfault if memory allocation fails

does not exist.

Also try to fix a few leaks (but meta handling still seems suspicious).

P.S.: That sort of things should be obvious.
Please don't commit such crap without reviewing.

Empty parameter means "default/guess".
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>