Merge "res_pjsip: Implement additional SIP RFCs for Google Voice trunk compatability"

configs/samples/pjsip.conf.sample

configure

configure.ac

...rsions/465f47f880be_add_pjsip_google_voice_sip_options.py

include/asterisk/autoconfig.h.in

include/asterisk/res_pjsip.h

res/res_pjsip.c

res/res_pjsip/config_auth.c

res/res_pjsip/config_transport.c

res/res_pjsip_outbound_authenticator_digest.c

res/res_pjsip_outbound_publish.c

res/res_pjsip_outbound_registration.c

res/res_pjsip_session.c

third-party/pjproject/configure.m4

third-party/pjproject/patches/0020-oauth.patch

...ct/patches/0030-allow-disabling-of-connection-reuse.patch