[boost] differences between sandbox and 1.46.0

I am working in the sandbox on an addition to the type trait library. I have run a diff between boost/type_traits directory in version 1.46.0 and in the sandbox. To my surprise, many files which I did not change myself are different: http://www.boostpro.com/vault/index.php?action=downloadfile&filename=boost-1.46.0_vs_sandbox.diff&directory=Extension& So my questions are: - is the sandbox supposed to be up to date compared to the trunk? - if not, there is a risk that people spend time working with wrong code; can we think of a procedure to update the sandbox when new versions are issued? Frédéric