I've added some patches (mostly more better English :) to the security policy.

I've also added an "Administrative Exceptions" section to deal with the following valid use-cases:

- Password sharing (like that of the mailman admin password) - Role accounts (for Ian and our wiki bot account) - Policy for other non-user passwords (like those of our webapps contacting the database)

Please comment on clarity and logic:

http://infrastructure.fedoraproject.org/csi/security-policy/en-US/html-singl...

-Mike