message: Canonicalize surelog path in logfiles.
  Fixes
diff: @@ -363,7 +363,15 @@ proc run_regression { } {
  if {$UPDATE == 1} {
  if [file exist "$REGRESSION_PATH/tests/$test/${testname}.log"] {
  log [format "| %-*s | Copying $REGRESSION_PATH/tests/$test/${testname}.log to $testdir/${testname}.log" $w1 $testname]
  - file copy -force "$REGRESSION_PATH/tests/$test/${testname}.log" "$testdir/${testname}.log"
  +
  + set fid [open "$REGRESSION_PATH/tests/$test/${testname}.log" "r"]
  + set content [read $fid]
  + close $fid
  + # Canonicalize things that should be neutral in diff outputs
  + regsub -all {[a-zA-Z_/-]*/Surelog/} $content {$(SURELOG_DIR)/} content
  + set outfd [open "$testdir/${testname}.log" "w"]
  + puts -nonewline $outfd $content
  + close $outfd
  continue
  } else {
  log [format "| %-*s | No action" $w1 $testname]
  