remove fmt parameter from ausrc/auplay api
ausrc/auplay api: change to 16-bit samples
update audio-driver modules with new ausrc/play API
re api changes:

- sip_param_decode() renamed to msg_param_decode()
- use msg_ctype_cmp() to check for Content-Type
stream_debug: also print local SDP address
dtmfio: fix warnings and improve detection
portaudio: fix clang warnings
ua: prefix contact-user cookie with SIP username
added call_setup_duration() and some small things

- Thanks to Lorenzo Mangani for this work
Merge branch 'master' into ausrc_api
config: add opensles to template
Merge branch 'master' into next
sndio: audio driver for OpenBSD

It was contributed by Dmitrij D. Czarkoff, thank you!
Merge branch 'master' into next
Merge pull request #5 from alfredh/next

Next
Merge branch 'master' into ausrc_api
debian: baresip now needs libre v0.4.8 or later
sndio: update to new ausrc/auplay API
dtmfio: include unistd for unlink()
Merge branch 'master' into ausrc_api