Define ortp_stream_is_ipv6 in utils.c so that it can be used everywhere in oRTP.
Implement RTCP send algorithm as described in RFC 3550.
Remove useless RtcpStream fields.
Put RTCP XR and RTCP FB handling in their own source code files + handle sending of RTCP XR packets.
Implement RTCP send algorithm from RFC 4585 for AVPF streams.
fix compilation issue
Disable (broken)srtp in ortp deb
Handle AVPF features and RR interval by payload type.
Prevent sending multiple PLI or FIR in a same RTCP compound message.
Fix wrong use of RTCP_DEFAULT_REPORT_INTERVAL in payload types.
Fix compilation with Visual Studio.
Fix memory leak of minimal source description.
Fix RTCP regular report interval in AVPF mode.
Set a default target upload bandwidth to have RTCP packets sent if it has not been set explicitly.
Merge remote-tracking branch 'origin/master' into dev_packet_duplication

Conflicts:
	src/rtpsession.c
Fix win32native compilation with Visual Studio.
new feature: multiple destinations can be added for a RtpSession.
Respect naming conventions and make some functions public.
Fix lost packets value in case of RTCP_OVERRIDE_LOST_PACKETS.
Merge branch 'master' into dev_packet_duplication