added backend-side support for on-the-fly operational attributes; added hasSubordinates to schema and back-ldbm

Misc schema updates

The old monitoring stuff has been removed; the new backend is
enabled by using --enable-monitor at configure time and requires

	database monitor

in slapd.conf to be activated.  At present it implements a subset
of the old monitoring options, and it should be extendable to
a number of different subsystems.  The search operation has been
implementd; it does not honor abandon or size/time limits, though.
The compare and the abandon operations are planned.

Copyright Pierangelo Masarati <ando@sys-net.it>; the code is provided
AS IS with NO GUARANTEE.  It can be used and distributed under the
conditions stated by the OpenLDAP Public License.

to a stable specification.

to have publishable OIDs.

(IETF namedref draft is now defunct)

type.  Add type to core.schema.  Not yet populated on add nor checked on modify.

Fix backend critical controls crash
Move 'associatedDomain' to core.schema

is required to be included.
This leaves openldap.schema empty.  Will use it to hold example
schema from the OpenLDAP Public Directory.

Needs work.  Volunteers welcomed.

	added new value_normalize() code
	need LDAPsyntaxes X- field support

Add needed syntaxes defs to schema_init.c