[patch, fix] Formatted output of IEEE exceptional values

[Brooks Moses]

Jerry DeLisle wrote:
> Regardless, it gets down to this.  The test case expects "Infinity" with 
> no sign for both positive and negative infinity when the field width is 
> 8.  This makes no sense, but looking at the related previous pr12839 it 
> talks about F2003 standard.  I don't have a way to to look at F2003.  So 
>   if there is some one who can or knows, please advise.

On the matter of having ways to look at F2003:

http://j3-fortran.org/doc/standing/007/ contains the final committee 
draft of the F2003 standard, in freely-downloadable .pdf, .ps, and .txt 
form, along with what I believe is the .tex source.

- Brooks