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.
Minimal hgk check
$ echo "[extensions]" >> $HGRCPATH
$ echo "hgk=" >> $HGRCPATH
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Am adda
adding a
$ hg debug-cat-file commit 0
tree a0c8bcbbb45c
parent 000000000000
author test 0 0
committer test 0 0
revision 0
branch default
adda