[boost] 1.46 closed for major changes

Boosters, per our calendar, 1.46 is now closed for major changes. What constitutes a major change is up to your judgement, but please excercise care with commits. 1.46 will be closed for all changes next Monday. Thanks, -- Vladimir Prus http://vladimir_prus.blogspot.com Boost.Build: http://boost.org/boost-build2