SPEC 189.lucas benchmark works

[S. Bosscher]

> Good news for all SPEC FP lovers: gfortran now  compiles
> and runs 189.lucas benchmark.   The amount of whitespace
> in the output is still wrong, which causes a miscompare.
> Other than that, the results are identical, as  far as I
> could see.

Very nice work Victor! Whee.

Is there a PR for the whitespace problem?

Gr.
Steven