Fix libgcc symbols for sh4

[kaz Kojima]

Dan Kegel <dank@kegel.com> wrote:
> Uh-oh.  Then I guess I'm back to square one... Here's the original problem
> that patch was supposed to fix:
> 
>> Building gcc-3.4-20030813 on x86 with target sh4-linux fails for me while
>> linking libstdc++-v3/testsuite/abi_check.c. ...
[snip]
> Do you see this failure?

I see it when "make check" but not when building libstdc++-v3.

Regards,
	kaz