Integrated Edon-R hash function.

*** 60,69 ****
--- 60,71 ----
  
  /*
   * Checksum routines.
   */
  extern zio_checksum_t zio_checksum_SHA256;
+ extern zio_checksum_t zio_checksum_EdonR512_256;
+ extern zio_checksum_t zio_checksum_EdonR512_256_byteswap;
  
  extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
      void *data, uint64_t size);
  extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out);
  extern enum zio_checksum spa_dedup_checksum(spa_t *spa);