introduce bool bBroadcast parameter for ScTable::SetDirty()

Change-Id: I62c3714c8036fe8d4b70ee188546c7d69ece1ea5
slightly speed-up things by using ScTable access

Change-Id: I378cd0e1eaa0f41799e4e18d1daae813540da77d
do not construct an ScAddress on each iteration

Change-Id: I3c89e649c289cd50035929d4025d0c18968b36f9