d中消除歧义方法

消除歧义方法:

//假设另外有个get可用,
    import curl = std.curl;
    // ...
    curl.get(whatever);

    import std.curl;
    alias curlGet = std.curl.get;
    // ...
    curlGet(whatever);

    static import std.curl;
    // ...
    std.curl.get(whatever);