Take latest pjsip-upstream
Match per-bono load with that specified in deployment sizing spreadsheet
Reimplement cw_stat in C++ to make it blazingly fast (or at least faster than the Ruby implementation) - this is needed on large-scale cacti systems as otherwise the Ruby startup overhead stops all nodes from being polled within 60s
Merge branch 'dev' into stress_fixes
Merge pull request #48 from Metaswitch/stress_fixes

[Reviewer: Andy] Stress fixes