Detect C++11 features for Developer Studio

This patch enables various C++11 features if the code is compiled with
Developer Studio compiler version 5.14 or higher.
diff --git a/include/rapidjson/rapidjson.h b/include/rapidjson/rapidjson.h
index 375e703..a256c86 100644
--- a/include/rapidjson/rapidjson.h
+++ b/include/rapidjson/rapidjson.h
@@ -549,7 +549,8 @@
 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 0
 #endif
 #elif (defined(RAPIDJSON_GNUC) && (RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,3,0)) && defined(__GXX_EXPERIMENTAL_CXX0X__)) || \
-      (defined(_MSC_VER) && _MSC_VER >= 1600)
+      (defined(_MSC_VER) && _MSC_VER >= 1600) || \
+      (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5140 && defined(__GXX_EXPERIMENTAL_CXX0X__))
 
 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 1
 #else
@@ -561,7 +562,8 @@
 #if defined(__clang__)
 #define RAPIDJSON_HAS_CXX11_NOEXCEPT __has_feature(cxx_noexcept)
 #elif (defined(RAPIDJSON_GNUC) && (RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,6,0)) && defined(__GXX_EXPERIMENTAL_CXX0X__)) || \
-    (defined(_MSC_VER) && _MSC_VER >= 1900)
+    (defined(_MSC_VER) && _MSC_VER >= 1900) || \
+    (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5140 && defined(__GXX_EXPERIMENTAL_CXX0X__))
 #define RAPIDJSON_HAS_CXX11_NOEXCEPT 1
 #else
 #define RAPIDJSON_HAS_CXX11_NOEXCEPT 0
@@ -586,7 +588,8 @@
 #if defined(__clang__)
 #define RAPIDJSON_HAS_CXX11_RANGE_FOR __has_feature(cxx_range_for)
 #elif (defined(RAPIDJSON_GNUC) && (RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,6,0)) && defined(__GXX_EXPERIMENTAL_CXX0X__)) || \
-      (defined(_MSC_VER) && _MSC_VER >= 1700)
+      (defined(_MSC_VER) && _MSC_VER >= 1700) || \
+      (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5140 && defined(__GXX_EXPERIMENTAL_CXX0X__))
 #define RAPIDJSON_HAS_CXX11_RANGE_FOR 1
 #else
 #define RAPIDJSON_HAS_CXX11_RANGE_FOR 0