[Bug fortran/52413] Incorrect behavior of FRACTION when applied to a constant

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52413

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Tentative patch. Not regression tested, yet.

I have applied the patch in comment #1 on top of revision 200321. I have
regtested without regression and tested thet this PR is fixed for all the
available kinds (4, 8, 10, and 16).

Steven, would it help if I do the packaging and the submission on your behalf
(someone will have to commit after approval)?