Updating configfsf.*

[Torbjorn Granlund]

Marc Glisse <marc.glisse at inria.fr> writes:
  
  how safe / dangerous is it to import new versions of configfsf.* ?
  There was a report on the mailing list some time ago about Macs being
  detected as 386, and the Hydra thing seems to have the same issue (not
  sure how they end up compiling C in 32 bits and C++ in 64 bits
  though).
  
What's Hydra?

  On the other hand, upstream config.guess seems to have special new
  code for when Darwin says 386, which should help.

We might try importing it for gmp-5.0, and see how the night build
behave.

But please make a quick review of the changes introduced first.

-- 
Torbjörn