[Patch, Fortran] invoke.texi: Be more verbose for -fno-automatic and -fmax-stack-var-size=<n>

[François-Xavier Coudert]

> 2007-08-16  Tobias Burnus  <burnus@net-b.de>
>
>         * invoke.texi (-fno-automatic,-fmax-stack-var-size):
>           Be more verbose in the description.

Looks OK to me, please wait 24 hours for possible native readers to step in.

Thanks!
FX