improvements to monitor backend: added a log entry that lists the current log level and can be modified via protocol at runtime, to change the log level; minor improvements; fixed a problem in dealing with dn normalization

done in do_bind() and there's space in the connection structure for c_ndn
already, just copy it.

together into a single searchable hierarchy.

in back-sql along the way.)

dn_parent return ch_strdup of dn_parent1 for compatibility.

	written by Ganesan Rajagopal <rganesan@debian.org>

backend build rules.