I have held off making some changes to trunk in SVN for clang with VC++ RTL until Boost 1.55 was out. I can do so now based on my tests with clang but I am concerned that the changes will not be carried over to the Boost git development branch when Boost switches to git. Should I be waiting until the git changeover is made and everyone learns to deal with git and the setup for using Boost with git, or should I start making changes now and watch the regression tests cycle ? I am sure from my tests that the changes, although involved in low-level libraries like config, mpl, type_traits, will not adversely affect any other compiler and will help in testing clang using VC++ RTL for Boost as clang inches closer to full support in Windows using VC++ headers and libraries.