add cleaner for autojump database, fixes #8
http://wiki.github.com/joelthelion/autojump/ - A cd command that learns - easily navigate directories from the command line
This deletes the database file where autojump stores directories accessed from the shell, and their access frequancy
autojump cleaner: clean error logs
7-Zip cleaner: fix missing cleaner file extension
World of Goo cleaner: fix invalid cleaner action syntax