Large number of new Fortran failures on AIX

[François-Xavier Coudert]

>         The previous testsuite run was about 12 hour before.  There were
> no fortran or libgfortran changes during that period, except possibly
> Volker's diagnostic patch.
>         There were a number of C patches during that time, so it is
> possible that libgfortran is being miscompiled for AIX.  libgfortran does
> not use mmap for I/O on AIX, unlike most of the other systems.

Oh, then there's not much help I can offer. You can always set a
breakpoint in the library (running a file that issues the "Record
number too large" error) to see what are the values of ioparm.rec and
current_unit->maxrec at line 1143 of libgfortran/io/transfer.c.

FX