bvalue cleanup

servers/slapd/acl.c

servers/slapd/add.c

servers/slapd/ava.c

servers/slapd/back-bdb/ctxcsn.c

servers/slapd/back-ldap/modify.c

servers/slapd/back-ldbm/modify.c

servers/slapd/back-meta/modify.c

servers/slapd/back-monitor/log.c

servers/slapd/back-perl/modify.c

servers/slapd/back-shell/modify.c

servers/slapd/back-sql/add.c

servers/slapd/overlays/slapover.txt

servers/slapd/repl.c

servers/slapd/schema_check.c

servers/slapd/slap.h

servers/slapd/slapi/slapi_ops.c

servers/slapd/slapi/slapi_utils.c

servers/slapd/syncrepl.c