joyent/node — pull request #5083 by doortts (2013-03-19 08:25:19+00:00)
Title: os: modify os.tmpdir() to judge more recommended order in windows

If someone(e.g. amdin) want to use an old NT command script
or has installed old windows in another dirve,
then %SystemRoot% would be more suitable.
And %windir is also used for old windows compatibility.

See: #3407