[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
[depends] move ffmpeg to unified deps
[configure] remove internal ffmpeg
remove ffmpeg from tree
ffmpeg: remove dll wrappers
add ffmpeg lock manager
todo: refactor to own file
ffmpeg: move callbacks into separate file
remove ffmpeg dlls from generated headers
not removing win32 as this might still be needed?
sq to configure - add --with-ffmpeg=force option
this will always build our ffmpeg version, even if its found in system
only enable auto building ffmpeg if we are not cross compiling
[rpi] setup-sdk.sh: allow overriding of buildroot and xbmc install paths
also don't require root if not needed
sq to configure - fixup after upstream rebase
add ffmpeg makefile for rpi