fix some repl and crashing issues
Ticket #382 - DS Shuts down intermittently
Trac Ticket #359 - Database RUV could mismatch the one in changelog under the stress
Bug #361: Bad DNs in ACIs can segfault ns-slapd
Trac Ticket #338 - letters in object's cn get converted to lowercase when renaming object
(cherry picked from commit 8f42d8054a361dec2b54117ba5493971fb95d761)
(cherry picked from commit e5fcfeb9505ae48aa39eca818c64789a9562ac53)