codereview: fix 'hg sync' and 'hg download' in Python 2.7

Fixes #1218.

R=rsc
CC=golang-dev
https://golang.org/cl/2664041

lib/codereview/codereview.py

@@ -1508,7 +1508,7 @@ def IsRietveldSubmitted(ui, clname, hex):
  if feed is None:
  return False
  for sum in feed.findall("{http:https://www.w3.org/2005/Atom}entry/{http:https://www.w3.org/2005/Atom}summary"):
- text = sum.findtext("", None).strip()
+ text = sum.text.strip()
  m = re.match('\*\*\* Submitted as [^*]*?([0-9a-f]+) \*\*\*', text)
  if m is not None and len(m.group(1)) >= 8 and hex.startswith(m.group(1)):
  return True
@@ -1542,7 +1542,7 @@ def DownloadCL(ui, repo, clname):
  # Find author - first entry will be author who created CL.
  nick = None
  for author in feed.findall("{http:https://www.w3.org/2005/Atom}entry/{http:https://www.w3.org/2005/Atom}author/{http:https://www.w3.org/2005/Atom}name"):
- nick = author.findtext("", None).strip()
+ nick = author.text.strip()
  break
  if not nick:
  return None, None, "CL has no author"