FITS: generating send-streams in portable format
This commit adds the command 'zfs fits-send', analogous to zfs send. The
generated send stream is compatible with the stream generated with that
from 'btrfs send' and can in principle easily be received to any filesystem.

*** 678,688 ****
                          }
                  }
          }
  }
  
! static int
  dsl_dataset_namelen(dsl_dataset_t *ds)
  {
          int result;
  
          if (ds == NULL) {
--- 678,688 ----
                          }
                  }
          }
  }
  
! int
  dsl_dataset_namelen(dsl_dataset_t *ds)
  {
          int result;
  
          if (ds == NULL) {