GitLab

fix broken gtk conference interface.

add mising declineCall() method to java api.

Hide uPnP firewall setting if uPnP is not available

Fix some issues related to uPnP

Add upnp public function
Add upnp jni
Improve uPnP support when a device is removed

- add api to add custom header (work in progress)
- add accessors to call logs and hide the structure into private.h

This is to respect section 8 of RFC 3264 ("Modifying the Session"). The
number of streams in the SDP MUST NOT decrease.

Add eXosip sal wrapper to eXosip_tls_verify_cn

add toggle button for this into gtk interface.

The user agent is no longer global and now depends on the linphone core
(kind of, there is still a global variable behind to hold its value).