Does not update the tests themselves.

In configure --help, call it "mdb database backend" instead of something
with "memory-mapped" which could confuse somebody about a memory-only DB.

Conflicts:

	servers/slapd/back-mdb/Makefile.in

Conflicts:

	configure

Split glue test in two.
Remove (slurpd) subtree replication test.
Reorder syncrepl/proxy tests

A little rough around the edges still.

on patch submitted by Mark Ruijter <openldap@siennax.com>.
This addresses (hopefully) ITS 2702, 2703, 2719, 2771.
Additional work:
	fix extraneous frees in libldap/getdn.c x509 rewrite routine
	indexing

parameter too difficult to use.

- if test back-ldbm then
-    run the provider with back-bdb when back-bdb is configured
-    run the provider with back-hdb when back-hdb is configured
-    exit when neither is configured

1. Glueing patch for proxy cache
2. test script update to avoid schema checking voilations (attributes set)
3. configuration patch for proxy cache

- IBM India Research (Apurva)

Add HDB to test suite

Need to hide cn=Monitor from namingContext