Commit a missed file in r253781:

Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14089:520f3adc5d46:

Illumos ZFS issues:
  3894 zfs should not allow snapshot of inconsistent dataset

uts/common/sys/fs/zfs.h

@@ -140,6 +140,7 @@ typedef enum {
 	ZFS_PROP_CLONES,
 	ZFS_PROP_LOGICALUSED,
 	ZFS_PROP_LOGICALREFERENCED,
+	ZFS_PROP_INCONSISTENT,		/* not exposed to the user */
 	ZFS_NUM_PROPS
 } zfs_prop_t;