Added comments. Removed debugging output.

Change-Id: I875439b7221f48990eff607eef4d8f2038539f27
Added isToBeChained()  method to  SdrTextAttribute

Change-Id: Ifcfacdf006270e9782afaacc2eeafe2269ec7f9a
ToBeChained status added to SdrTextObj

Change-Id: If7c7bd4384aeb705ba52eee5465c2b5aee78b1d9