when creating user account from Administrator form, and lower_case email address
before inserting into database. Added script make_emails_lowercase.php which
goes through user database and changes email addresses to lowercase, and sets CPID
to a random string if it is currently 0 (empty). It should be safe to run this
script any number of times, on a damanged or undamaged user database, with no side
effects.
svn path=/trunk/boinc/; revision=4596