* cfk.mk: Exclude bootstrap from sc_long_lines
as it comes from gnulib.
exclude_file_name_regexp--sc_prohibit_uppercase_id_est = \.diff$$
exclude_file_name_regexp--sc_ensure_dblspace_after_dot_before_id_est = \.diff$$
exclude_file_name_regexp--sc_ensure_comma_after_id_est = \.diff|$(_ll)$$
-exclude_file_name_regexp--sc_long_lines = \.diff$$|$(_ll)|$(_cksum)
+exclude_file_name_regexp--sc_long_lines = \.diff$$|$(_ll)|$(_cksum)|bootstrap
# `grep . -q` is not exactly equivalent to `grep . >/dev/null`
# and this difference is significant in the NEWS description