Avoid use of libgcc_s and libgcc_eh when building glibc

[David Miller]

From: "Joseph S. Myers" <joseph@codesourcery.com>
Date: Wed, 30 May 2012 10:59:46 +0000 (UTC)

> I'd like architecture maintainers to test this, for all libc architectures 
> and for IA64.

I'll do some sparc testing for you today.