[boost] [math] build failure with BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS

I'm attempting to upgrade from boost 1.49 to boost 1.52 beta1, and have run into a problem building the math libraries. It seems that defining BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS no longer works, leading to build failures if it is defined. This worked in boost 1.49, where I was defining it in $BOOST_ROOT/boost/math/tools/user.hpp as described in the comments therein. I've filed a ticket for this problem: https://svn.boost.org/trac/boost/ticket/7485