Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113086 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/ostream b/include/ostream
index 90f3403..7b02716 100644
--- a/include/ostream
+++ b/include/ostream
@@ -153,12 +153,12 @@
     explicit basic_ostream(basic_streambuf<char_type, traits_type>* __sb);
     virtual ~basic_ostream();
 protected:
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     basic_ostream(basic_ostream&& __rhs);
 #endif
 
     // 27.7.2.3 Assign/swap
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     basic_ostream& operator=(basic_ostream&& __rhs);
 #endif
     void swap(basic_ostream& __rhs);
@@ -261,7 +261,7 @@
     this->init(__sb);
 }
 
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 template <class _CharT, class _Traits>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -279,7 +279,7 @@
     return *this;
 }
 
-#endif  // _LIBCPP_MOVE
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 template <class _CharT, class _Traits>
 basic_ostream<_CharT, _Traits>::~basic_ostream()
@@ -1206,7 +1206,7 @@
     return __os;
 }
 
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 template <class _Stream, class _Tp>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -1222,7 +1222,7 @@
     return __os;
 }
 
-#endif  // _LIBCPP_MOVE
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 template<class _CharT, class _Traits, class _Allocator>
 basic_ostream<_CharT, _Traits>&