PATCH: Fix Solaris/SPARC bootstrap without gas

[Mikael Pettersson]

Rainer Orth writes:
 > This patch
 > 
 > 	[PATCH]: Fix comdat et al. on sparc
 > 	http://gcc.gnu.org/ml/gcc-patches/2010-01/msg01237.html
 > 
 > broke bootstrap on Solaris/SPARC since HAVE_GNU_AS is always defined
 > even without gas (as 0 in this case).
 > 
 > The following patch at least allowed the stage 1 libgcc to configure.
 > 
 > Ok for mainline?
 > 
 > I don't have current baselines of the 4.3 and 4.4 branches, so testing
 > there will take some time.

When this patch went into 4.4 branch it caused the following
regression on my sparc64-linux machine:

                === g++ tests ===

FAIL: g++.dg/abi/guard2.C scan-assembler _ZGVZN1A1fEvE1i,comdat

This test was one that David's comdat patch fixed.
Reverting Rainier's patch makes this test pass instead.

/Mikael