Since setlocal is now set by the application, remove setting user-preferences from the search. In the case it is needed, do not forget to keep a backup of setlocale with std::string (to keep name in memory) and restore the locale after the use (which was not done and lead to a bug where encoding change)

- Update ReadMe.
- Update VPX build.

+ flags on raspberry pi 3+ for mbedtls build

by sending an HTTP message to a CCMP server.
The XML schema of RFC6503 has been slightly modified to overcome a
limitation in the parsing of abstract types  of the xsdcxx library

Do not report ConferenceCallEvent if the call is not linked to any conference or the conference doesn't support media
Prevent registration of dependent account after its removal
Add ENABLE_DEPRECATED_TESTS to avoid running deprecated tests in the CI

Add upper limit to the index of the histograms bins (fix crash).
Correct the counter of definitely lost packets. When a packet n is read from jitter buffer, if the last one was m and n -m > 1, then the list of missing packets is updated. All missing packets older than m that where asked in FEC but has not been repaired are supposed to have been found in the jitter buffer. It could happen if the packets do not arrive in chronological order.
If the gap between m and n is bigger than 100 there could be a reset in the sequence numbers. In that case the new sequence numbers are not considered, as it would lead to count a large number of lost packets that may not exist.

Fix http digest authentication with several challenges in a single Www-authenticate header (MD5, SHA-256)

Enable parallel test execution of job liblinphone-debian12-openssl-test-mr

    default one as it may associate to it all chatrooms

    In fact, if an application is registering with multiple account, all
    chatroom are assigned to the default account after restarting the core
    as MainDb::getChatRooms doesn't assign it explicitely.

    The conference object has a method that attempt to assign an account to
    the parameters already if not already done

liblinphone: Add message id to chat mesage in order to uniquely identify it when a duplicate comes in. The call id is not enough as multiple message may be sent over the same dialog

liblinphone: linphone_chat_room_get_local_address can return a NULL pointer if the chat room has just been instantiated

Avoid random failures of test "Video conference by merging video calls with active speaker layout 2"

Update the framesize of the audio signal to analyze in tone detector, depending on the chosen sampling rate. The audio sample duration is then always 20 ms.

Test if a tone has really been played before the validation of the detection.

Reduce the estimated delay in order to add a margin for AEC, for all systems. The margin is computed in percent of the estimated delay.

Replace deprecated function in test_ecc.c by linphone_core_start_echo_canceller_calibration.