[4.3.0] remove system_error support

[Andrew Pinski]

On Thu, Feb 28, 2008 at 2:59 PM, Benjamin Kosnik <bkoz@redhat.com> wrote:
>
>  After carefully reviewing the 4.3.0rc exports for libstdc++, I'm happy
>  with one exception.

Ok, why is this done this late instead of thinking about the ABI
implications earlier on?

I am sorry but this late patching from the libstdc++ folks is making
me have a bad taste in my mouth.

-- Pinski