Update synposis in <memory> to show move semantics for weak_ptr; add tests for already existing move semantics. Mark LWG issues #2315 (no changes needed), 2316 (move semantics for weak_ptr), 2252 (previous commit) and 2271 (previous commit) as complete.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@202931 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/www/cxx1y_status.html b/www/cxx1y_status.html
index 92bc77b..9bd758e 100644
--- a/www/cxx1y_status.html
+++ b/www/cxx1y_status.html
@@ -217,10 +217,10 @@
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2291">2291</a></td><td>std::hash is vulnerable to collision DoS attack</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2142">2142</a></td><td>packaged_task::operator() synchronization too broad?</td><td>Issaquah</td><td></td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2240">2240</a></td><td>Probable misuse of term "function scope" in [thread.condition]</td><td>Issaquah</td><td>Complete</td></tr>
-	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2252">2252</a></td><td>Strong guarantee on vector::push_back() still broken with C++11?</td><td>Issaquah</td><td></td></tr>
+	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2252">2252</a></td><td>Strong guarantee on vector::push_back() still broken with C++11?</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2257">2257</a></td><td>Simplify container requirements with the new algorithms</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2268">2268</a></td><td>Setting a default argument in the declaration of a member function assign of std::basic_string</td><td>Issaquah</td><td>Complete</td></tr>
-	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2271">2271</a></td><td>regex_traits::lookup_classname specification unclear</td><td>Issaquah</td><td></td></tr>
+	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2271">2271</a></td><td>regex_traits::lookup_classname specification unclear</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2272">2272</a></td><td>quoted should use char_traits::eq for character comparison</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2278">2278</a></td><td>User-defined literals for Standard Library types</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2280">2280</a></td><td>begin / end for arrays should be constexpr and noexcept</td><td>Issaquah</td><td>Complete</td></tr>
@@ -247,8 +247,8 @@
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2308">2308</a></td><td>Clarify container destructor requirements w.r.t. std::array</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2313">2313</a></td><td>tuple_size should always derive from integral_constant<size_t, N></td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2314">2314</a></td><td>apply() should return decltype(auto) and use decay_t before tuple_size</td><td>Issaquah</td><td></td></tr>
-	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2315">2315</a></td><td>weak_ptr should be movable</td><td>Issaquah</td><td></td></tr>
-	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2316">2316</a></td><td>weak_ptr::lock() should be atomic</td><td>Issaquah</td><td></td></tr>
+	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2315">2315</a></td><td>weak_ptr should be movable</td><td>Issaquah</td><td>Complete</td></tr>
+	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2316">2316</a></td><td>weak_ptr::lock() should be atomic</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2317">2317</a></td><td>The type property queries should be UnaryTypeTraits returning size_t</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2320">2320</a></td><td>select_on_container_copy_construction() takes allocators, not containers</td><td>Issaquah</td><td>Complete</td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2322">2322</a></td><td>Associative(initializer_list, stuff) constructors are underspecified</td><td>Issaquah</td><td>Complete</td></tr>