defluffing Portfiles (port lint)

[Anders F Björklund]

> Apparently one of the oldest feature requests around...
> http://trac.macports.org/projects/macports/ticket/463
>
> I created a basic implementation, for later expansion:
> http://trac.macports.org/projects/macports/ticket/12211

I guess there will be NO feedback on this until it has
been committed to trunk, so maybe we can do that now ?

It does highlight some portstyle issues to be sorted out,
like where the newlines should go and amounts of tabbing.

--anders