contrib: fix check-commit to not reject commits from `hg sign` and `hg tag`
I'm tired of having a spurious red build every time we do a
release. Fix it once and for all.
# See http://EditorConfig.org for the specificationroot = true[*.py]indent_size = 4indent_style = spacetrim_trailing_whitespace = true[*.{c,h}]indent_size = 8indent_style = tabtrim_trailing_whitespace = true