4171 clean up spa_feature_*() interfaces
4172 implement extensible_dataset feature for use by other zpool features
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>

@@ -296,10 +296,12 @@
         boolean_t dsa_incremental;
         uint64_t dsa_last_data_object;
         uint64_t dsa_last_data_offset;
 } dmu_sendarg_t;
 
+void dmu_object_zapify(objset_t *, uint64_t, dmu_object_type_t, dmu_tx_t *);
+void dmu_object_free_zapified(objset_t *, uint64_t, dmu_tx_t *);
 
 #ifdef  __cplusplus
 }
 #endif