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# CMakeBackwardCompatibilityCXX

define a bunch of backwards compatibility variables

    CMAKE_ANSI_CXXFLAGS - flag for ansi c++
    CMAKE_HAS_ANSI_STRING_STREAM - has <strstream>
    include(TestForANSIStreamHeaders)
    include(CheckIncludeFileCXX)
    include(TestForSTDNamespace)
    include(TestForANSIForScope)

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