Fix cgg translation

Close #11594
Fix crash on input stream info containing %
contrib: qt 5.3.0
mux: mp4: check alloc result before use
mux: mp4: set timestamps on empty sub block
demux: mp4: add support for computer graphics meta atom

see bartjones.mov
http://streams.videolan.org/samples/mov/unrecognized/
a52: avoid overflow conversion to signed integer
flac: avoid overflow in conversion to signed integer
vorbis (tremor): avoid overflow in conversion to signed integer
release-howto: remove outdated info
l10n: make update-po
l10n: Acoli update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Amharic (Ethiopia) update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Aragonese update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Arabic update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Asturian update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Bulgarian update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Bengali (India) update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Bengali update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
l10n: Breton update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>