FFmpeg: Bump to version 2.3.2
fixed: built-in function SetStereoMode not work
[python] fix ListItem.setPath docs
[python] add setSubtitles method for ListItem
[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
Merge pull request #5192 from tamland/setsubtitles

[python] add setSubtitles method for ListItem
LINUX: Fix compile error.

Removal of utils/StdString.h in 6c3a7b62 lost an indirect include of
stdio.h which defined FILE for this header.
Merge pull request #5226 from t-nelson/compile_fix

LINUX: Fix compile error.
Merge pull request #5206 from fritsch/ffmpeg-2.3.2

FFmpeg: Bump to version 2.3.2
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