fix declarations of buffers for numeric strings; other related cleanup

contrib/slapd-modules/smbk5pwd/smbk5pwd.c

include/ldap_pvt.h

libraries/libldap/url.c

libraries/liblutil/utils.c

servers/slapd/acl.c

servers/slapd/aclparse.c

servers/slapd/back-monitor/conn.c

servers/slapd/back-monitor/rww.c

servers/slapd/back-sql/add.c

servers/slapd/back-sql/config.c

servers/slapd/back-sql/proto-sql.h

servers/slapd/back-sql/schema-map.c

servers/slapd/back-sql/search.c

servers/slapd/back-sql/util.c

servers/slapd/config.h

servers/slapd/daemon.c

servers/slapd/overlays/dds.c

servers/slapd/proto-slap.h

servers/slapd/slap.h

servers/slapd/syncrepl.c