Dump core on restund hang
Fix path
Add bono/sprout-specific diags
Sprout now compiles when linked with new sas-client library
Markups
More markups
More markups
Make restund abort-restart properly
Merge pull request #280 from Metaswitch/sto518

[Reviewer: Rob][From: Alex] Diagnostics code review.
Rework SAS error numbers
Make updater generic
SAS markups - flatter event ID structure, translation between SAS and Sprout log levels, use the marker IDs from the SAS client library rather than keeping our own copy.
Updates after live test
Further updates
Further code review markups
Change to monotonic
Merge pull request #292 from Metaswitch/clock_realtime

[Reviewer: Andy] Change to monotonic
Select a transport from connection pool for routing calls to sprout
Add UTs to demonstate ENUM problem
Reorder some stateful_proxy logic to fix ENUM problem