[shairplay] - backport of https://github.com/juhovh/shairplay/commit/ac9240fa569df5a10d534a4cd45740a44ee00f63 - fixes race between ipv4 and ipv6 socket acceptance
[shairplay] - backport of https://github.com/juhovh/shairplay/commit/8e6795779558d2828aef14078fefbcadd5323fa6 - fixes passwd auth with itunes
[win32/shairplay] - bump package to version with those 2 backports
[pvr] fix: set flag UserSetIcon if channel icon is changed in pvr channel manager

If an user set its own icon for a channel, this one is reset to null upon xbmc restart because UserSetIcon flag is not set.
[pvr] fix: non-existing icons will never be delete from the database
[pvr] use also custom channel name to search for channel icon

If an user set a custom channel name for a pvr channel, this name should
also be used when searching for an icon.
Merge pull request #4477 from xhaggi/pvr-icon-fixes

[pvr] fixes related to chanel icons
Merge pull request #4476 from Memphiz/shairplayfix

[shairplay] - upstream backports - fix password protection and socket race condition
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
dvdplayer: allow rewinding at end of stream, do a seek after rewind
X11: ditch SDL for video and window events
X11: Add xbmc icon
X11: add SDL joystick until we have a better solution
X11: factor out code handling device reset notification
X11: move xrandr events to WinEventsX11