pool_propput_common
ret = pool_propput_common(pool->pool_props, pair, pool_prop_pool);
ret = pool_propput_common(pool_sys_prop, pair, pool_prop_sys);
ret = pool_propput_common(pset->pset_props, pair, pool_pset_props);
ret = pool_propput_common(cpu->cpu_props, pair, pool_cpu_props);
extern int pool_propput_common(nvlist_t *, nvpair_t *, pool_property_t *);