Expose sasl flags to -lldap (so they can be quiet)

clients/tools/ldapdelete.c

clients/tools/ldapmodify.c

clients/tools/ldapmodrdn.c

clients/tools/ldappasswd.c

clients/tools/ldapsearch.c

include/ldap.h

include/lutil_ldap.h

libraries/libldap/cyrus.c

libraries/libldap/ldap-int.h

libraries/libldap/sasl.c

libraries/liblutil/sasl.c