D891: cleanup: use urllibcompat for renamed methods on urllib request objects

[yuja (Yuya Nishihara)]

yuja accepted this revision.
yuja added a comment.
This revision is now accepted and ready to land.


  Maybe we'll have to work around unicode/bytes dance in urllibcompat.py, but
  this patch looks good as itself.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D891

To: durin42, #hg-reviewers, yuja
Cc: yuja, mercurial-devel