in the .BR form.

(Assumes soelim is generally available)

- 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