Adding correct PJSIP reference counting
Name log file by process name (fixes #106)
Merge branch 'dev' of github.com:Metaswitch/sprout into valgrind_fix

Conflicts:
	sprout/registrar.cpp
Merge pull request #107 from Metaswitch/issue106

[Reviewer: Mike] Name log file by process name (fixes #106)
Merge pull request #109 from Metaswitch/valgrind_fix

{Reviewer: Mike} Valgrind fix