libffi is broken for x32

[H.J. Lu]

On Mon, Jan 12, 2015 at 2:42 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> This libffi commit:
>
> 13e2d7b92557a9511a0414df82bf2df3edc55cba is the first bad commit
> commit 13e2d7b92557a9511a0414df82bf2df3edc55cba
> Author: Anthony Green <green@moxielogic.com>
> Date:   Thu Jan 10 10:52:02 2013 -0500
>
>     Handle both 32 and 64-bit x86 builds regardless of target triple
>
> breaks x32.
>

This patch passed "make check" in libffi on x32.  I am testing
it in GCC now.

GCC is configured as x86_64-unknown-linux-gnu with x32
enabled.  libffi should set TARGET to X86_64 if __x86_64__
is defined.

-- 
H.J.
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