pt-upgrade has Maatkit legacy values

[Baron Schwartz]

pt-upgrade hasn't forgotten about Maatkit yet. This doesn't cause any problems, but it would be nicer if all of the tables it creates, etc were pt-prefixed. To verify,

$ grep mk pt-upgrade
   my $left_tbl = "`$db`.`mk_upgrade_left`";
   my $right_tbl = "`$db`.`mk_upgrade_right`";
      left_tbl => 'mk_upgrade_left',
      right_tbl => 'mk_upgrade_right',
         tbl => 'mk_upgrade_left',
         tbl => 'mk_upgrade_right',
L<"--temp-database"> called C<mk_upgrade_clear_warnings>.
Do C<CREATE TEMPORARY TABLE `mk_upgrade` AS query> then
C<CHECKSUM TABLE `mk_upgrade`>. This method is fast and simple but in
type: string; default: mk_upgrade

[Daniel Nichter (daniel-nichter)]

pt-upgrade was completely re-written for 2.2. This issue is no longer valid and it won't be fixed in 2.1.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PT-921