tree be5e706d8079e8e090cb59f940a9770b3b117ea6
parent 2ffbce93326c9512900d0f08e51221a1073ab89c
author William (Weiliang) Yan <wyan@google.com> 1510215647 -0800
committer William (Weiliang) Yan <wyan@google.com> 1510614436 -0800

Support GCE Windows.

1. Allow updating cookie files.
2. Error out with warning when --nofork is missing. os.fork() is not supported on Windows.
3. Error out with warning when env var HOMEPATH is not set.

Change-Id: I155774afed8910d5cd38780a47e321fac6651953