py3: wrap tempfile.mkstemp() to use bytes path
This patch just flips the default to use a bytes path on Python 3.
ca1cf9b3cce7 is backed out as the bundlepath should be bytes now.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true