[gfortran] Patch for potential bug in i/o library

[Thomas Koenig]

Janne Blomqvist wrote:

> I guess the key to improving i/o performance would
> be to make the library interface more coarse grained, e.g. enabling
> transfer of contigous array sections in one go instead of looping over
> all the individual elements?

Definitely.  For arrays, it would be straightforward to pass an
array descriptor to the i/o library, and have it handled there.
Lots of m4 to be written :-)  Implied do loops will be harder,
but not as important.  If these can be converted to an
array descriptor (sort of, using temporaries), that would be ideal.