Import Boost-CMake work for 1.35.0

svn path=/branches/CMake-release/libs/conversion/; revision=43495
Merged to Boost 1.35.0 

svn path=/branches/CMake/release/boost/implicit_cast.hpp; revision=44008
Update more intermodule dependencies in CMake

svn path=/branches/CMake/release/libs/conversion/; revision=47432
tools/build/CMake/BoostCore.cmake:
  - Turn off the Boost-subsetting options (BUILD_BOOST_*, TEST_BOOST_*), which
    are causing trouble and will not be used.
  - Add the MODULARIZED option to boost_library_project, which says that the
    library has been modularized and tested that way. Only MODULARIZED 
    libraries go into the main "modularize" target.

Remove all module.cmake files; we're starting over with the dependencies. 


svn path=/branches/CMake/release/libs/conversion/; revision=47513