X11: remove dead code
ffmpeg: bump to 2.3.1
[depends/gas-preprocessor] - bump gas to https://git.libav.org/?p=gas-preprocessor.git;a=commit;h=03e23216b7e657fdf202befc129ca94cd582c253 - needed for ffmpeg2.3 compilation on ios
ffmpeg: adjust API requirements for external ffmpeg to 2.3.1
[namechange] Add Kodi splash and start log message with "Kodi"
[release] bump to 14.0 alpha3
Merge pull request #5047 from FernetMenta/ffmpeg

ffmpeg: bump to 2.3.1
Merge pull request #5050 from FernetMenta/clean

X11: remove dead code
[stdstring] get rid of CStdString in PVRDatabase, PVRGUIInfo, PVRManager
[stdstring] get rid of CStdString in pvr/addons
[stdstring] get rid of CStdString in pvr/channels
[stdstring] get rid of CStdString in pvr/recordings
[stdstring] get rid of CStdString in pvr/timers
[stdstring] get rid of CStdString in pvr/dialogs
[stdstring] get rid of CStdString in pvr/windows
[cleanup] use std:: instead of using namespace std in PVRDatabase, PVRGUIInfo and PVRManager
[cleanup] use std:: instead of using namespace std in pvr/addons
[cleanup] use std:: instead of using namespace std in pvr/channels
[cleanup] use std:: instead of using namespace std in pvr/dialogs
[cleanup] use std:: instead of using namespace std in pvr/timers