py3: use encoding.strtolocal() to convert string to bytes

Differential Revision: https://phab.mercurial-scm.org/D1557

mercurial/debugcommands.py

@@ -721,6 +721,7 b' def debugstate(ui, repo, **opts):'
         else:
             timestr = time.strftime(r"%Y-%m-%d %H:%M:%S ",
                                     time.localtime(ent[3]))
+            timestr = encoding.strtolocal(timestr)
         if ent[1] & 0o20000:
             mode = 'lnk'
         else: