- fix various connection creation/setup concurrency issues
- use shared connection when always idasserting (similar to ITS#4781)
- reduce the impact of schema mapping when not used (tnx to gprof)
- fix temporary/tainted connection leak in abnormal conditions

add "report" to "onerr" modes: continue a search in case one target returns an error, and only propagate the error at the end

LDAP Content Sync in general and "syncrepl" should only be used
when referring to replication-specific functionality.