-270 Repro tests now enabled!
-fixup some test cases
 testAttendedExtensionToExtensionTransfer
 testBlindTransferExtensionToExtensionHangupImmediately
 testConferenceConferencorHangup 
-reworked disableDigestAuth code to use Guard class
-cleanup some spacing/formatting in sanityTests.cxx

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/branches/b-uasprack-20130904@10673 ddefafc4-47db-0310-ae44-fa13212b10f2