[Bug libfortran/93567] G edit descriptor uses E instead of F editing in rounding mode UP

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93567

--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
patch submitted at https://gcc.gnu.org/pipermail/fortran/2020-July/054770.html.