Revert "ITS#7702 fix results with aliases"

This reverts commit cac00c6a97bbbbcec75f2ebcffaae1dd1769a28e.
ITS#7702 better fix

Check for duplicate scopes in search_aliases, not later.
ITS#7928 fix syncprov abandon cleanup
ITS#7928
ITS#7930 partial fix

Only restore op->o_req_dn if no one else changed it on us.
ITS#7930 additional fix

bypass cleanup handlers for suppressed search result msgs
ITS#7930
ITS#7933 fix frontend config
ITS#7933
ITS#7934 add missing normalization of attrs
ITS#7934
ITS#7929 don't log internal searches
ITS#7929
 lmdb: clean testdb-dir while "make test".
 lmdb-backend: checkpoint-interval seconds instead of minutes.
 lmdb: implementation of "checkpoint kbytes",
       force flush when volume of the changes reached a configurable threshold.
 lmdb-backend: implement "checkpoint kbytes" option.
 lmdb: lifo-1, list of reclaimed freedb records.
 lmdb: lifo-2, reclaim free-db records from reader's tail.
 lmdb: aim to coalesce reclaimable records in freeDB.