4185 New hash algorithm support

*** 55,64 ****
--- 55,67 ----
          SPA_FEATURE_ASYNC_DESTROY,
          SPA_FEATURE_EMPTY_BPOBJ,
          SPA_FEATURE_LZ4_COMPRESS,
          SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
          SPA_FEATURE_SPACEMAP_HISTOGRAM,
+         SPA_FEATURE_SHA512,
+         SPA_FEATURE_SKEIN,
+         SPA_FEATURE_EDONR,
          SPA_FEATURES
  } spa_feature_t;
  
  extern zfeature_info_t spa_feature_table[SPA_FEATURES];