[boost] [1.55][log] Last minute bug fix

Hi, Is it too late for a fix in Boost.Log in 1.55? Here's the commit: https://svn.boost.org/trac/boost/changeset/86600 This fixes garbage output when using dump() manipulator on CPUs with AVX2 support. The bug didn't appear on any of our testers because apparently none of them have Haswell CPUs. I tested this change locally on Linux, gcc 4.8, but it should be valid on all platforms. If it's too late already then maybe a note with the patch in the release notes would be possible?