As the frames per buffer were changed for 320 samples...

Flush all will be used when registering a new RTP stream and thus set
new resampling to make sure we do not resample data with wrong sampling
rate info

Merge branch 'master' of git+ssh://repos-sflphone-git@git.sflphone.org/var/repos/sflphone/git/sflphone

Signed-off-by: Alexandre Savard <alexandre.savard@savoirfairelinux.net>

Merge branch 'master' of git+ssh://repos-sflphone-git@git.sflphone.org/var/repos/sflphone/git/sflphone

Conflicts:
	sflphone-common/src/sip/Regex.cpp
	sflphone-common/src/sip/SdesNegotiator.cpp
	sflphone-common/src/sip/testRegex.cpp

For cases when we do not receive data from a conference participant anymore

a consistent set of methods could not be maintained because of the need
to support global (-g style) matches. findall is replaced by groups() as in
python. Also, matches() provides a way to see if a match succeeded or not while
updating the state of the object to reflect the next portion of the string
to consider, in case of global match. Finally, thread safety was removed because:

1. Concurrent access to a Pattern object is most cases doesn't make sense.
2. A less thin foil hat "design by contract" kind of approach was chosen.

A stub of implementation in SdesNegociator was done. However, this code was
NOT COMPILED nor TESTED at the moment these lines are written. Also,
the cumbersome parsing for the session-params component has to be finished.