Avoid 64-bit Solaris/SPARC -gstabs link failures (PR ld/12152)

[David Miller]

From: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Mon, 05 Mar 2012 17:06:44 +0100

> I think it's pointless for ld to error out for one of 3 relocs: this
> just obscures real problems in gcc testsuite results.  An alternative
> would be to skip 64-bit -gstabs* testing, of course.

My position is that we should remove all of these special cases
for STAB relocation overflows, not just one. :-)