Unreviewed patch

[FX]

> The following patch has remained unreviewed for a week:
> 
> 	[build] Disable hwcaps on libgfortran
>        https://gcc.gnu.org/ml/gcc-patches/2016-12/msg00336.html
> 
> It is required to unbreak bootstrap on Solaris/x86 and, though touching
> both libgfortran and libitm, probably needs primarily a build
> maintainer or global reviewer.

The Fortran part is OK, but I can’t approve the libitm part.

FX