Handle snprintf and vsnprintf values appropriately in the logger to avoid stack problems
Review feedback
Update SAS bundle ID after including GRUU events
Don't log while destroying a logger
Merge pull request #180 from Metaswitch/logger_crash

[Reviewer: Andy] Don't log while destroying a logger
Merge pull request #178 from Metaswitch/logger_stack_smashing

[Reviewer: Andy] Handle snprintf and vsnprintf values appropriately in the logger to avoi...
Merge pull request #179 from Metaswitch/gruu_sas_events

[Reviewer: Mike] Update SAS bundle ID after including GRUU events