Boolean
ConstrainedServerHasRecord(Handle hoServer)
returns true if a relates-to constrained parent DD has a record. This checks up
the DDO structure. We do this to figure out if a record exists up the parent
tree. We only need to check relates-to contrained parents because non-constrained
parents already set the DD changed_state to true. Becuase you should only have
one relate-to constraint per DD, this only has to search up one branch