fix openh264 build issue
Fix VP8 broken with avpf
Update linphone
Fix liblinphone for mediastreamer_tester
Add missing files to liblinphone
Add media streamer unit tests for Xcode, this allows to launch it from the command line
Update linphone
Update linphone
Update linphone and fix tests names to remove unsupported characters (it is not exhaustive...)
Fix for #1821: Entering a real SIP address in Proxy field makes it crash
Fix #645: Activate ICE, make an audio call and then enable video while ICE setup isn't finished.

-> We now wait until no media transition is occurring to re-enable the video button
Remove debug code...
Fix chat discrepancies with the "is composing" indicator
Change debug test to the old one
Add transifex support for localization
Update API use for linphone_content
Use block-based animation in ChatRoomView and fix the scroll to the bottom when the keyboard hides
Disable x86_64 for subprojects: we don't compile the SDK for this arch.
Use UTF-16 LE strings file since it's the default encoding now.
Add arabic translation (not yet translated, this is just for the files)