Integrated Edon-R hash function.

*** 52,61 ****
--- 52,62 ----
  
  enum spa_feature {
          SPA_FEATURE_ASYNC_DESTROY,
          SPA_FEATURE_EMPTY_BPOBJ,
          SPA_FEATURE_LZ4_COMPRESS,
+         SPA_FEATURE_EDONR_CKSUM,
          SPA_FEATURES
  } spa_feature_t;
  
  extern zfeature_info_t spa_feature_table[SPA_FEATURES];