Distinguish between C++11 language and library support for std::function, std::begin, std::end, and std::move in gtest and gmock.

Bring in gtest 694.

include/gmock/gmock-generated-function-mockers.h.pump

@@ -268,13 +268,13 @@ class MockFunction<R($ArgTypes)> {
 
   MOCK_METHOD$i[[]]_T(Call, R($ArgTypes));
 
-#if GTEST_LANG_CXX11
+#if GTEST_HAS_STD_FUNCTION_
   std::function<R($ArgTypes)> AsStdFunction() {
     return [this]($ArgDecls) {
       return this->Call($ArgNames);
     };
   }
-#endif  // GTEST_LANG_CXX11
+#endif  // GTEST_HAS_STD_FUNCTION_
 
  private:
   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);