[ASG] explanation for ASG mailing list noise

Hi guys, I apologize for the odd messages bouncing around on the list. Please ignore those last few. I just configured the wikis to automatically email the mailing list when a wiki page is modified, and it triggered some confirmation emails that I didn't expect :) Moving forward you should see emails indicating that either a new page was created or an existing page was modified. If a page is modified then it will provide a link that you can follow to view a diff of the changes. Hopefully anyone who does not want to see these messages can just filter them in their mail reader, but I think in general it will be helpful to know when there is something new on the wiki. thanks, -Phil