2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>

@@ -57,10 +57,11 @@
         libzfs_fru_notself;
         libzfs_fru_refresh;
         libzfs_init;
         libzfs_mnttab_cache;
         libzfs_print_on_error;
+        spa_feature_table;
         zfs_allocatable_devs;
         zfs_asprintf;
         zfs_clone;
         zfs_close;
         zfs_create;

@@ -199,14 +200,18 @@
         zpool_mount_datasets;
         zpool_name_to_prop;
         zpool_obj_to_path;
         zpool_open;
         zpool_open_canfail;
+        zpool_print_unsup_feat;
         zpool_prop_align_right;
         zpool_prop_column_name;
+        zpool_prop_feature;
+        zpool_prop_get_feature;
         zpool_prop_readonly;
         zpool_prop_to_name;
+        zpool_prop_unsupported;
         zpool_prop_values;
         zpool_read_label;
         zpool_refresh_stats;
         zpool_reguid;
         zpool_reopen;