- enable (non-ES) settings even if no output is present
 - best effort at handling multiple outputs
 - remove exceptions
 - libvlc_video_get_size returns both dimensions
 - libvlc_video_take_snapshot takes a parameter to select the output

TBD: Makefile

Fix regression brought by ce67728a
As stated in the 'BIG FAT WARNING', decoder_t and filter_t first members must
be the same ones.

This solves skins2 numerous images failing to be displayed due to swscale
 video filter no longer working properly (a filter_t to decoder_t cast issue)

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

(I was wondering why those kept being recompiled)

This will make variable inheritance to child inputs much simpler

No need to do that check anymore.

and refactor playlist code for optimization

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>