ffmpeg: bump to 2.4.4
[audioencoders] bump to their latest master

Legacy symlinks in lib/includes need fixing as with them these dont compile.
[keymap] fix guide button for kernel-based mceusb remotes (closes #15374)
[release] bump to 14.0 rc2
Fixed Polish translation of "%s of %s available"
Merge pull request #5868 from perexis/master

[translation] Fixed Polish translation
Merge pull request #5861 from FernetMenta/ffmpeg

ffmpeg: bump to 2.4.4
Merge pull request #5866 from Jalle19/fix-mceusb-lircmap-epg

[keymap] fix guide button for kernel-based mceusb remotes (closes #15374)
Merge pull request #5870 from MartijnKaijser/14.0rc2

[release] bump to 14.0 rc2
Merge pull request #5825 from uNiversaI/audio
[osx] new application icons
[skin] update re-touched skin
Merge pull request #5873 from Memphiz/osxnewicons

[osx] new application icons