[patch/rfc] Add host's floatformat

[Andrew Cagney]

>>Like this?  I feel ill.
> 
> 
> One problem with your approach is that "1.0" may not be a suitable
> pattern to match for every FPU.  I left the test constant in the
> structure because some FPUs may need more esoteric patterns to
> differentiate themselves from other FPUs.  Hence the comment about
> keeping them in order, too.

Er, this pattern matching idea is your approach, not mine.  I'd rather 
just stick with configure.ac.  If there really is a problem such as you 
describe then surely the person that encounters that problem gets to fix it.

Andrew