[Templates] patches for some better diagnostics

[Mark D. Anderson]

>         # interpolate EOL in format
>         $format =~ s/\\n/\n/g;
>         $format = $DEBUG_FORMAT unless defined $format;

Should be this order to avoid undef warning (ironically enough):
          $format = $DEBUG_FORMAT unless defined $format;
          # interpolate EOL in format
          $format =~ s/\\n/\n/g;

-mda