GitLab

Conflicts:
	tester/mediastreamer2_tester_windows.cpp
	tester/mediastreamer2_tester_windows.h

Now using MS_DEFAULT_MAX_PAYLOAD_SIZE . To change it afterwards using the
MSfactory in use, call  ms_factory_get_payload_max_size.

Audio filters update : replacing ms_filter_new/ ms_filter_new_from_desc by ms_factory_create_filter/ms_factory_create_filter_from_desc.
Fixing small issue in audio stream.c and text stream (Windows crash on audio_stream_stop and text_stream_stop).

# Conflicts:
#	src/voip/audiostream.c

avoid using CN with g722, it doesn't work because it's a wideband codec declared with 8000 Hz clockrate

 accessible from the MSFactory.
Adding MSWebCamManager* in MSFactory.
Adding MSFactory to MSWebCamManager* and pointer to manager in MSWebCam.
Using ms_factory_wbc_amanger or snd_manager get  to get pointers to the managers.
Using ms_factory_create to create a new factory and initialize it
(ticals ms_factory_new and ms_factory_init plugins and voip).

Add a define controling whether a rescaling of the signal should be done before entering in the G722 decoder

The new define is a private define and is called ENABLE_PCM_RESCALING. Its value can be 0 or 1.
By default, the PCM rescaling is disabled

Process ICE check lists in parallel (should prevent bug with pair that comes back to the waiting state when it might already be successful).