localrepo.status: only append stuff to the clean list if list_clean is true

This is consistent with dirstate.status.

mercurial/localrepo.py

@@ -951,7 +951,8 b' class localrepository(repo.repository):'
                         if fcmp(f, getnode):
                             modified.append(f)
                         else:
-                            clean.append(f)
+                            if list_clean:
+                                clean.append(f)
                             if not wlock and not mywlock:
                                 mywlock = True
                                 try: