[PATCH]: misc header file cleanup.

[Michael Elizabeth Chastain]

Hi J. T.,

> In any case, there is no harm to fix the macros now in case someone
> decides to use them later.

Agreed.

> And other things I choose to simple suppress (fortunately, the lint I'm
> using has very finegrained control over error message generation).

I'm interested in operator precedence errors.  I have noticed "a % b * c"
(where the author meant "a % (b * c)") and also the classic
"a & b == c".

Michael