Use 127.0.0.1/::1 for Chronos callbacks
Merge master into cpp-common
Take master cpp-common
Merge remote-tracking branch 'origin/master' into make_timers_redundant
Merge pull request #82 from Metaswitch/make_timers_redundant

[Reviewer: Andy] Use 127.0.0.1/::1 for Chronos callbacks