Spaces->tabs in the mail category.    

Bump PORTREVISION due to security fix.    

Add a patch to address the known remote buffer overflow, from   Mike Silbersack
<silby@silby.com>. Add a build- and install-time   warning about the probable
existence of further remote security   problems, and remove FORBIDDEN.    

Convert category mail to new layout.  

Mark all of the pine3/4 ports FORBIDDEN due to remotely exploitable   buffer
overflows. Sorry guys, but having an insecure mailer just isn't   worth it.    

Update all ports using OpenSSL and RSA to work without rsaref since   it is no
longer required. Apologies to the various maintainers whom I   did not yet hear
back from, but the ports freeze is coming up in a few   hours and I will be
verifying all of these ports on a 4.1 machine   myself to catch any problems.   

Make these COMMENT files conform to Handbook standard.