lfs: add a fileset for detecting lfs files
This currently has the same limitation as {lfs_files}, namely it doesn't report
removed files.
We may want a dedicated 'lfs()' revset for efficiency, but combining this with
the 'contains()' revset should be equivalent for now. Combining with
'set:added()' or 'set:modified()' inside 'files()' should be equivalent to a
hypothetical lfs_adds() and lfs_modifies(). I wonder if there's a way to tweak
the filesets to evaluate lazily, to close the efficiency gap.
It would also be interesting to come up with a template filter for '{files}'
that looked at the pattern to 'files()', and filtered appropriately. While
passing a fileset as the pattern to `hg log` does filter '{files}', the set is
evaluated against the working directory, so there's no way to list all non-lfs
files above a certain size in all revisions, for example.
# 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