Merge pull request Tencent#1231 from steveire/patch-1

Use rvalue refs with clang-cl

Author: miloyip

include/rapidjson/rapidjson.h

@@ -543,7 +543,7 @@ RAPIDJSON_NAMESPACE_END
 #ifndef RAPIDJSON_HAS_CXX11_RVALUE_REFS
 #if defined(__clang__)
 #if __has_feature(cxx_rvalue_references) && \
-    (defined(_LIBCPP_VERSION) || defined(__GLIBCXX__) && __GLIBCXX__ >= 20080306)
+    (defined(_MSC_VER) || defined(_LIBCPP_VERSION) || defined(__GLIBCXX__) && __GLIBCXX__ >= 20080306)
 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 1
 #else
 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 0