[Patch] Add to the libgfortran/newlib bodge to "detect" ftruncate support in ARM/AArch64/SH

[FX]

> 2015-08-25  James Greenhalgh  <james.greenhalgh@arm.com>
> 
> 	* configure.ac: Auto-detect newlib function support unless we
> 	know there are issues when configuring for a host.
> 	* configure: Regenerate.

Thanks for CC’ing the fortran list.

Given that this is newlib-specific code, even though it’s in libgfortran configury, you should decide and commit what’s best. I don’t think we have any newlib expert in the Fortran maintainers.

Wait for 48 hours to see if anyone else objects, though.

Cheers,
FX