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

test/containers/sequences/vector/vector.modifiers/emplace_back.pass.cpp

@@ -15,7 +15,7 @@
 #include <cassert>
 #include "../../../stack_allocator.h"
 
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 class A
 {
@@ -49,11 +49,11 @@ public:
     double getd() const {return d_;}
 };
 
-#endif  // _LIBCPP_MOVE
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
 int main()
 {
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     {
         std::vector<A> c;
         c.emplace_back(2, 3.5);
@@ -80,5 +80,5 @@ int main()
         assert(c.back().geti() == 3);
         assert(c.back().getd() == 4.5);
     }
-#endif  // _LIBCPP_MOVE
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
 }