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/numerics/rand/rand.util/rand.util.seedseq/initializer_list.pass.cpp

@@ -19,7 +19,7 @@
 
 int main()
 {
-#ifdef _LIBCPP_MOVE
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     std::seed_seq s= {5, 4, 3, 2, 1};
     assert(s.size() == 5);
     unsigned b[5] = {0};
@@ -29,5 +29,5 @@ int main()
     assert(b[2] == 3);
     assert(b[3] == 2);
     assert(b[4] == 1);
-#endif  // _LIBCPP_MOVE
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
 }