Change struct berval * to struct berval in various structures

servers/slapd/ava.c

servers/slapd/back-bdb/compare.c

servers/slapd/back-bdb/filterindex.c

servers/slapd/back-bdb/index.c

servers/slapd/back-bdb/modify.c

servers/slapd/back-bdb/search.c

servers/slapd/back-ldap/compare.c

servers/slapd/back-ldbm/cache.c

servers/slapd/back-ldbm/compare.c

servers/slapd/back-ldbm/filterindex.c

servers/slapd/back-ldbm/index.c

servers/slapd/back-ldbm/modify.c

servers/slapd/back-ldbm/search.c

servers/slapd/back-monitor/log.c

servers/slapd/charray.c

servers/slapd/compare.c

servers/slapd/dn.c

servers/slapd/entry.c

servers/slapd/filter.c

servers/slapd/filterentry.c