Same as `git_config_bool`, except that integers are returned as-is, and
an `is_bool` flag is unset.
-`git_config_maybe_bool`::
-Deprecated. Use `git_parse_maybe_bool` instead. They are exactly the
-same, except this function takes an unused argument `name`.
-
`git_parse_maybe_bool`::
Same as `git_config_bool`, except that it returns -1 on error rather
than dying.