Open Projects for C++ Support

I have updated the Clang Open Projects page with some ideas for small- to medium-sized projects that could help us get closer to supporting C+. The page is here:

Note that I have omitted large projects, such as templates and C++ code generation, because I expect that volunteers looking for something to do won't want to tackle such large projects. If you have more ideas for things that need to be implemented, please add them!

  - Doug