F77 makefile again.

[Jamie Lokier]

Mike Stump wrote:
> I feel this is a popular misconception.  Try timing a complete build
> with -j1 -j2 and -j3.  I have found that -j3 is the fastest total
> elapsed time on my uniprocessor system.  People that are very tight on
> memory may find that things are not sped up with -j3, but other than
> that I would expect that things will be faster.

-j3 is my uniprocessor optimum too.
When it works, it works great.

-- Jamie