tests/test-backwards-remove.t

win32: assign winstdout to sys.__stdout__ as well (issue2888)

On Windows sys.stdout was being replaced with winstdout, which caused
util.system() to redirect its output (due to 406b6d7bdcb9). That causes
interactive tools (such as vim) to stop working.

  $ hg init
  $ echo This is file a1 > a
  $ hg add a
  $ hg commit -m "commit #0"
  $ ls
  a
  $ echo This is file b1 > b
  $ hg add b
  $ hg commit -m "commit #1"
  $ hg co 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

B should disappear

  $ ls
  a