More wiki stuff

I've added the following to the wiki:

• Procmail
  
  
  • Using formail to break incoming message digests into individual messages
  
  
  • Playing sounds when mail arrives


• Spam
  
  
  • How to add MySQL logging to MIMEDefang


• Vi
  
  
  • Like or hate the multicolored syntax highlighting? Turn it on or off!
  
  
  • Opening many files at the same time

The link for the wiki is in the menu bar above.