fix RtpTransport leak on video side as well
Enable XML output for liblinphone tester
Fix lpconfig test on read-only storage
Remove (now) unneeded use_files and fix the way we manage use_files in the linphone_core_manager to include a ringback tone
Fix the soundcard hint so that it trigger only when _all_ calls are paused or pausing (instead of just one call suffice). Also increase the test delay.
Improve Python module documentation.
Use ms_time() instead of time()
Allow for longer timeout in register
Typo
Handle links between methods in the Python module documentation.
Replace NULL by None in the Python module documentation.
Factor check_file in tester and fix last log time check
Lengthen the hello8000 to accomodate slow devices where 10s sound might be too short for bandwidth measurement
Remove unused variable
Update file player test to take in account the new hello8000 duration
Fix Python module tests.
Fix compilation with Visual Studio.
Disable x11 support on MacOS X target by default
Fix homebrew README (MacOSX): user must install gtk+ --without-x11 to avoid segmentation fault at launch
More permissive type checking in the Python module.

- int values are accepted where a long is expected.
- int or long values are accepted where a float is expected.