Minor QA/bench updates.

echo mkfs & mount options into the output.

bench

@@ -159,19 +159,19 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _require_scratch
 
-cat >$OUT <<-EOF
-	MKFS_OPTIONS=$MKFS_OPTIONS
-	MOUNT_OPTIONS=$MOUNT_OPTIONS
-
-EOF
+echo "MKFS_OPTIONS=$MKFS_OPTIONS" >>$OUT
+echo "MOUNT_OPTIONS=$MOUNT_OPTIONS" >>$OUT
+echo "" >>$OUT
 
 rm -f bench.*
 for bench in $benches
-do 
+do
     echo "" >$FULL
     echo "" >$LOG
     _log "*** benchmark started [passes=$passes, benchmark=$bench]"
     _log "*** (`date`)"
+    _log "*** MKFS_OPTIONS=$MKFS_OPTIONS"
+    _log "*** MOUNT_OPTIONS=$MOUNT_OPTIONS
     _log "        *** unmounting scratch device"
     umount $SCRATCH_DEV 2>&1 | _fix_malloc >>$FULL