Update to reflect changed semantics of is_address_ipv6.py
Merge pull request #599 from Metaswitch/in_dialog_sas

[Reviewer: Alex] Protect against mixing up calling and called numbers in SAS (fixes #399)
Use 504 rc
Merge pull request #600 from Metaswitch/iss572

[Reviewer: Mike] Overload return codes
Update cpp-common
Merge pull request #601 from Metaswitch/iss572

[No reviewer] Update cpp-common
Update pjsip
Merge pull request #602 from Metaswitch/multipart_issues

[No reviewer] Update pjsip
Check rc of get_auth
Updates after review
Merge pull request #604 from Metaswitch/iss603

[Reviewer: Rob] Check rc of get_auth
Merge pull request #608 from Metaswitch/ipv6_address_rc

Update to reflect changed semantics of is_address_ipv6.py
Change chronos default
Merge pull request #612 from Metaswitch/iss610

[Reviewer: Andy] Change chronos default
Use new log_cleanup
Merge pull request #613 from Metaswitch/log_cleanup

[No reviewer] Use new log_cleanup
Merge branch 'dev' of github.com:Metaswitch/sprout into access_logging

Conflicts:
	scripts/sprout-log-cleanup