Sync AMTL.

public/amtl/am-hashset.h

@@ -101,6 +101,9 @@ class HashSet : public AllocPolicy
   bool add(Insert &i, const K &key) {
     return table_.add(i, key);
   }
+  bool add(Insert &i, Moveable<K> key) {
+    return table_.add(i, key);
+  }
 
   // This can be used to avoid compiler constructed temporaries, since AMTL
   // does not yet support move semantics. If you use this, the key and value

public/amtl/am-inlinelist.h

@@ -123,7 +123,7 @@ class InlineList
     return iterator(&head_);
   }
 
-  void erase(Node *t) {
+  void remove(Node *t) {
     t->prev_->next_ = t->next_;
     t->next_->prev_ = t->prev_;
   }