[PATCH] Sync config and libiberty with GCC

[H.J. Lu]

On Wed, Apr 29, 2020 at 11:07 AM Simon Marchi via Gdb-patches
<gdb-patches@sourceware.org> wrote:
>
> Hi Nick,
>
> Since commit 56b1e56d2c2fa ("Rebase libiberty source with latest changes from gcc."), I get
> this when libiberty gets configured:
>
>   checking for CET support... configure: error: Intel CET must be enabled on Intel CET enabled host
>
> Is it expected?  I don't really know what that means, but hopefully we don't have to pass
> --enable-cet to every build.
>
> In any case, something's not right, because the GCC_CET_HOST_FLAGS macro is not defined in
> the binutils-gdb repo.  So when I `autoreconf -vf` libiberty, the configure script does
> not get re-generated correctly.

This is what I checked in.

-- 
H.J.
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