Fix for recovery of constraint indexes.

o Constraint indexes do no longer verify uniqueness during recovery.
  They should not verify uniquneness at all, but that is a larger change.
o NodeRecord now correctly copies inUse flag for clone()
o NodeRecord now prints out the inlined labels it contains as a list, rather
  than as the long they are packed into.
Merge pull request #1371 from jakewins/uniqueindex-recovery

Fix for recovery of constraint indexes.