test-check-code: do not use xargs
We have too many files, and passing them via arguments could cause strange
errors on some platforms [1]. Since check-code.py can now take "-" and read
file names from stdin, use it instead of xargs to avoid the argv size limit.
[1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-April/096346.html
%include map-cmdline.default
# Override base templates
changeset = '{cset}{branches}{bookmarks}{tags}{parents}{user}{ldate}{summary}{lfiles}\n'
changeset_verbose = '{cset}{branches}{bookmarks}{tags}{parents}{user}{ldate}{description}{lfiles}\n'
changeset_debug = '{fullcset}{branches}{bookmarks}{tags}{lphase}{parents}{manifest}{user}{ldate}{extras}{description}{lfiles}\n'
# Override the file templates
lfiles = '{if(files,
label('ui.note log.files',
'files:\n'))}{lfile_mods}{lfile_adds}{lfile_dels}'
lfile_adds = '{file_adds % "{lfile_add}{lfile_src}"}'
lfile_mods = '{file_mods % "{lfile_mod}{lfile_src}"}'
lfile_add = '{label("status.added", "A {file}\n")}'
lfile_mod = '{label("status.modified", "M {file}\n")}'
lfile_src = '{ifcontains(file, file_copies_switch,
label("status.copied", " {get(file_copies_switch, file)}\n"))}'
lfile_dels = '{file_dels % "{label('status.removed', 'R {file}\n')}"}'