FIX: [mediacodec] ART is not happy with non-existent values in map
AlarmClock: xbmc.powerdown does not exist anymore
ActiveAE: fix idling of engine due to high number of samples in sink buffers
ActiveAE: add missing lock to GetWaterLevel
load navigation sounds from user config directory
dxva-hd: fix past/future frames and a/v sync
renderer: fix queue size for DXVA-HD
Merge pull request #4593 from FernetMenta/dxva

dxva-hd: fix past/future frames and a/v sync
[plugins] ensure we lookup the add-on as a plugin before trying any extension point when fetching a plugin:// directory
Merge pull request #4589 from FernetMenta/aefixes

ActiveAE: fix idling of engine due to high number of samples in sink buf...
Merge pull request #4587 from fritsch/xbmc-upstream

AlarmClock: Show correct string for shutdown timer
Merge pull request #4576 from koying/fixamcart

FIX: [mediacodec] ART is not happy with non-existent values in map
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
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection