New AIX regressions

[David Edelsohn]

>>>>> Benjamin Kosnik writes:

Ben> Actually, if you look at Mark's powerpc-linux results between 4-29 and
Ben> 4-30 you'll notice a bunch of new fails as well.

Ben> This makes me think it's probably a powerpc-specific issue in the
Ben> backend.

Ben> Thoughts?

	This assumption contradicts my test of a week old version of the
compiler which shows the same libstdc++-v3 failures.  The backend has not
changed in any PowerPC-specific way during the period the failures
appeared. 

David