fixed: built-in function SetStereoMode not work
[addons] Add and refresh icons.

Any more please let me know, especially for main addons repo or kodi/ex-xbmc lots.
gitignore: Add libstagefrightICS/Makefile

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
Merge pull request #5219 from koying/quickpr

gitignore: Add libstagefrightICS/Makefile
[AirTunes] - Don't leave audio_flush uninitialised
Merge pull request #5220 from popcornmix/airplay_audio_flush_init

[AirTunes] - Don't leave audio_flush uninitialised
Merge pull request #5165 from uNiversaI/icons

[addons] add and refresh icons.
Merge pull request #5203 from taxigps/setstereomode

fixed: built-in function SetStereoMode not work
[3D] default preferred stereoscopic mode to "auto"
[3D] make "mono/2D" a default playback mode instead of a preferred stereo mode (it's no real stereomode)

Also removes the mode "none" from the list of preferred modes, which also doesn't make sense.
[3D] hide stereomode of movie in ask dialog if preferred mode is sames as movie mode
[3D] show "same as movie" as preferred mode label in case of autodetection instead of the detected mode
[3D] handle stereoscopic mode of videos in mixed playlists