py3: use bytes literals for test extension
These extensions don't get run through our custom module importer.
It's easy enough to make them dual compatible with Python 2 and 3.
# skip-blame b prefixes
Differential Revision: https://phab.mercurial-scm.org/D2155
# 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