Push several shanges:

Make single argument constructors explicit in macros.

    Remove NOMINMAX macro.

    Add macros for disabling Microsoft Visual C++ warnings.

    Add WhenDynamicCastTo<T> matcher.
    A matcher that matches a pointer that matches inner_matcher when
    dynamic_cast<T> is applied.

    Add IWYU export pragmas to the tuple include lines.

    Fix NativeArray to not require a copy constructor unless we ask for one.
    This allows ElementsAre() to support non-copyable types.

    Examine WINAPI_FAMILY_PARTITION macros to better distinguish windows platforms.
    Author: martin@martin.st
    From: https://codereview.appspot.com/57220043/

include/gmock/gmock-generated-matchers.h.pump

@@ -653,7 +653,7 @@ $var param_field_decls2 = [[$for j
       return ::testing::Matcher<arg_type>(\
           new gmock_Impl<arg_type>($params));\
     }\
-    $class_name($ctor_param_list)$inits {\
+    [[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {\
     }\$param_field_decls2
    private:\
     GTEST_DISALLOW_ASSIGN_($class_name);\