[boost] [1.51][hash] Permission to merge.

Hello release managers, Please can I merge changeset 80038: https://svn.boost.org/trac/boost/changeset/80038/ The tests have cycled for most major compilers and libraries. I think the only missing one is Visual Age C++ which isn't affected since it doesn't have support for C++11 headers. This fixes a bug when compiled with Intel on windows. thanks, Daniel