Use bzrtp lib to provide ZRTP engine
Note: changing lib result in loosing current zrtp cache content
Manage cache file creation
Update android makefile to use bzrtp
Use bzrtp to generate keys for IM encryption
Merge branch 'dev_bzrtp' of git.linphone.org:ortp into dev_bzrtp
Add an index to the ZRTP cache for IM encryption
Merge branch 'master' into dev_bzrtp
Fixed ortp deb packaging (using --enable-broken-srtp)
Fix previous commit: deb was generated but not working
Use int type instead of int8_t that is causing troubles with Visual Studio.
IM encryption, fix session index initialisation
IM encryption, fix session index initialisation
Merge branch 'dev_bzrtp' of git.linphone.org:ortp into dev_bzrtp
Public definitions of flags for status of PLC and jitter buffer in RTCP XR packets.
Merge branch 'master' into dev_bzrtp
disable zrtp cache cb if no file provided
improve bandwidth computations
Merge remote-tracking branch 'origin/dev_bzrtp'

Conflicts:
	src/zrtp.c
Merge branch 'master' of git.linphone.org:ortp
Add ZRTP exported key in cache only for the first channel
- Don't set callback to do it if no URI is supplied