[boost] The Community Maintenance Team proposal accepted

The Steering Committee has voted to accept the Community Maintenance Team proposal, and Marshall Clow has volunteer to act as the team's fearless leader. See https://dl.dropboxusercontent.com/u/9897665/community-maintenance.htmlfor the actual proposal. Thanks to everyone who contributed ideas and discussion. I tried to capture contributors names in the Acknowledgements section of the proposal. Apologies if I missed anyone. --Beman