Merge in Normalized DN bug fixes and optimizations from devel.

include/ldapconfig.h.edit

servers/slapd/acl.c

servers/slapd/add.c

servers/slapd/back-ldbm/add.c

servers/slapd/back-ldbm/bind.c

servers/slapd/back-ldbm/cache.c

servers/slapd/back-ldbm/compare.c

servers/slapd/back-ldbm/delete.c

servers/slapd/back-ldbm/group.c

servers/slapd/back-ldbm/modify.c

servers/slapd/back-ldbm/modrdn.c

servers/slapd/back-ldbm/search.c

servers/slapd/back-passwd/search.c

servers/slapd/back-shell/bind.c

servers/slapd/backend.c

servers/slapd/bind.c

servers/slapd/compare.c

servers/slapd/config.c

servers/slapd/daemon.c

servers/slapd/delete.c