Allow multiple vendors when searching for AVPs
Handle different integer types
Merge remote-tracking branch 'origin/master' into rf-fixes
Catch and recover from unrecognised AVP exceptions
Better log strings
Merge pull request #59 from Metaswitch/rf-fixes

Reviewer Rob - Allow multiple vendors when searching for AVPs
Merge remote-tracking branch 'origin/master' into rf-fixes
Merge pull request #67 from Metaswitch/rf-fixes

No reviewer - Rf fixes code review markups
Merge remote-tracking branch 'origin/master' into sto536