+pro #17611 add perl script to find javadoc errors

scripts/find-javadoc-error.pl

@@ -0,0 +1,15 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+my $active = 0;
+my $print = 0;
+while (<>) {
+  $active = 1, next if /Generating.*\.html/;
+  $active = 0, next if /Genjavadoc Java API documentation successful\./;
+  $print = 1 if /^\[error].*error:/;
+  $print = 0 if /warning:/;
+  print if $active && $print;
+}
+