Better fall back to software decoding than crash.

These are the versions of JACK and JACK2 which introduced the
latency API.
Error out if JACK is not installed and "--enable-jack" was used.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

auhal: fix compilation on 10.6 and prevent attempts to set it up on those OS X versions (refs #8536)

This commit also prettifies the displayed scare messages

This reverts commit 1e6cf730.

Adding XYZ colorspace allow usage of jpeg2000 decoders for
digital cinema
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

(Maybe the list of accelerated codecs should be removed now...)

Authentication will fail anyway. Also fixes NULL for %s.

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

If you really don't want it, then use NDEBUG

Close #8217

'user' is the adjective describing the 'community'

Close #8518
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Close #8320

Close #8480

And add it to Qt simple preferences

Ref #6624

libavcodec may request more buffer space than it really needs for
alignment.