ADMIN_cleanup_log_tables.pl - archive and cleanup log tables

[okli]

http://eflo.net/VICIDIALmantis/view.php?id=218

Hope this gets reviewed and polished by Vicidial team and maybe becomes useful for someone else in situation like ours- slowing down MySQL server due to 8-10 million records the logs tables.

[mflorell]

Thank you very much for posting this. Hope to have some time to review and commit it.