load navigation sounds from user config directory
[plugins] ensure we lookup the add-on as a plugin before trying any extension point when fetching a plugin:// directory
Merge pull request #4598 from jmarshallnz/plugins_run_as_plugins

[plugins] ensure we lookup the add-on as a plugin before trying any other extension point
Merge pull request #4590 from tamland/nav-sound-fix

Fix: navigation sounds from user config directory are never loaded
dvdplayer input stream: fix incorrectly set of EOF
paplayer: proper handling of non seekable streams
[musicdb] fix incorrect use of ComputeCRC, causing playcounts to not update. Thanks to amet
[cosmetic] get rid of unused variable
[musicdb] joins against album and song artist views should be LEFT, as some songs/albums have no artist. fixes #15149
[gui] don't show the 'remote path not found' message on directory failure unless it's a share. closes #15091, #15133.
[PVR] bump add-ons
Merge pull request #4602 from opdenkamp/pvrgotham

[PVR] bump add-ons
FIX: [droid] crash when stat'ing /mnt/secure/asec on some devices (fixes #15148)
Merge pull request #4594 from FernetMenta/paplayer

paplayer: proper handling of non seekable streams
Merge pull request #4607 from koying/fixdroidstoragecrash

FIX: [droid] crash when stat'ing /mnt/secure/asec on some devices (fixes #15148)
[osx] fix make build on osx
[tests] fix CharsetConverter.utf8To_UTF32LE test on osx
[tests] fix HttpHeader test
[depends] move ffmpeg to unified deps
[configure] remove internal ffmpeg