(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

starttls
tls keywords
logbase
logfilter
syncdata

parameters that are now available.  Add the relevant documentation from
slapd.conf(5) about these parameters.

the --enable-monitor steps are not needed.  Best just to
note this section assumes a default build and briefly note
requirements if built as a module.
Note that some example LDIFs don't include userApplications
attributes.