[boost] [typeof][CMT] Could the maintenance team please review and merge a trivial pull request?

Hi, There is one trivial PR hanging for nearly a year now: https://github.com/boostorg/typeof/pull/1 In those 2 lines of code namespace boost was explicitly added in front of enable_if and disable_if. This allows msvc8 to compile the tests when Boost.Test and Boost.TypeOf are both used. Could you please have a look at it? Regards, Adam