Do not pause calls or reject SDP with no active stream if the client is trying to update a conference

A dial out conference will fail to be created if the organizer and the server have no matching codec

Upgrade tunnel revision.

Fix leak of nat_policy_X section in configuration file, and add code to automatically cleanup orphan sections.

Updated liblinphone to add FriendListener allowing to notify a specific friend presence has been updated + fixed/improved a few things related to FriendList & CardDAV

Fix inconsistency in microphone state when a call is started while the microphone is not enabled at LinphoneCore level.

(cherry picked from commit fa0a7bbb)

Restore -Wunused-parameter compilation warning.

Fix crashes due to incorrect ownership management of some returned objects, introduced in previous commit.

Updated liblinphone to prevent race condition crash when stopping Core while Service is alive on Android

Use JSON to serialize iOS push notification payload.

Change flexisip tester DNS server to fs-test-5.linphone.org

It is activated with LINPHONE_BUILDER_WINDOWS_TOOLS_CHECK If a check has been already done and is successful, it will avoid to update them on each build.