Split some too long preformatted lines.

Briefly compare back-bdb and back-ldbm.
Remove mention of MDBM and NDBM.  Rename GNU DBM to GDBM.
Fix spacing typos.  Prefix an octal file mode with 0.
Mention "notags" (new name for "nolang" from the attribute options patch).
Add SEE ALSO slapd-monitor(5) to slapd.conf(5).

(which was axed log ago)

(and performance) reasons.

improve limits handling and consistency; return "Admin limit exceeded" instead of "Unwilling to perform"

with each password-hash scheme.

Add protected simple authentication as a "strong" mechanism.