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Improved support for Microsoft Visual C++ compilers.

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--------------------------
Microsoft Visual C++ 9.0:
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    Microsoft Windows SDK 6.1 (x86, x64, ia64)
    Microsoft Windows SDK 7.0 (x86, x64, ia64)

Microsoft Visual C++ 10.0:
    Microsoft Windows SDK 7.1 (x86, x64, ia64)

Microsoft Visual C++ 14.0:
    Microsoft Visual C++ Build Tools 2015 (x86, x64, arm)
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    Known supported compilers
    -------------------------
    Microsoft Visual C++ 9.0:
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        Microsoft Windows SDK 7.0 (x86, x64, ia64)

    Microsoft Visual C++ 10.0:
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