py3: use "%d" % val for int rather than pycompat.bytestr

Earlier I used pycompat.bytestr() to convert integers to bytes, but we can do
b"%d" % val to convert that int to bytes. b'' is already added by the
transformer.

Thanks to Yuya for suggesting this.

mercurial/commands.py

@@ -2774,8 +2774,7 b' def identify(ui, repo, source=None, rev='
                   ('+'.join([hexfunc(p.node()) for p in parents]), changed)]
             if num:
                 output.append("%s%s" %
-                  ('+'.join([pycompat.bytestr(p.rev()) for p in parents]),
-                                                                    changed))
+                  ('+'.join(["%d" % p.rev() for p in parents]), changed))
         else:
             if default or id:
                 output = [hexfunc(ctx.node())]

mercurial/templatekw.py

@@ -623,7 +623,7 b' def showparents(**args):'
     ctx = args['ctx']
     pctxs = scmutil.meaningfulparents(repo, ctx)
     # ifcontains() needs a list of str
-    prevs = [pycompat.bytestr(p.rev()) for p in pctxs]
+    prevs = ["%d" % p.rev() for p in pctxs]
     parents = [[('rev', p.rev()),
                 ('node', p.hex()),
                 ('phase', p.phasestr())]
@@ -653,7 +653,7 b' def showrevslist(name, revs, **args):'
     args = pycompat.byteskwargs(args)
     repo = args['ctx'].repo()
     # ifcontains() needs a list of str
-    revs = [pycompat.bytestr(r) for r in revs]
+    revs = ["%d" % r for r in revs]
     f = _showlist(name, revs, args)
     return _hybrid(f, revs,
                    lambda x: {name: x, 'ctx': repo[int(x)], 'revcache': {}},