Requiring a blank line at the top of a function if there are no local
declerations dates to the original style.9 commit (b030a30523649), but I and was
present in the first version of admin/style/style from mckusick@ in 1991.
can't find a reference to the original so don't have any idea where it
came from. Without context it seems like foolish consistencyIt's certainly consistant to have a blank line after a null-set of
variables, but today it's an oddity unique to BSD source code.
Document it as a historic practice and encourage removal in the context
of other changes, but not sweeping commits.