HEADS UP: OPTIONS improvement

[Peter Thoenen]

> > > > After pav@'s commit to bsd.port.mk, now you can test
> WITH/WITHOUT
> > > > freely with OPTIONS.

I guess to ask the obvious question, as a low maintenance port
maintainer (e.g don't follow all the latest and greatest nitty gritty
details) exactly what does this do for me and why do I care (or want to
adopt my ports to use this) ..  I don't exactly find "now you can test
WITH/WITHOUT freely with OPTIONS" self-evident.

As a general comment, I think this is also sorely lacking in most
"HEADS UP" port annoucements .. e.g. why do we care and what does it do
for us in layman terms.

-Peter