mainline AIX bootstrap broken in libstdc++-v3

[David Edelsohn]

>>>>> Paolo Carlini writes:

Paolo> Well, I see only the two trivial problems at 408 and 439, and the below 
Paolo> is what
Paolo> I'm regtesting. If you concur and are ready to commit, please go ahead!

	I see that you committed your version.  It was similar to my
version and appears to solve the problem.  I will restart the bootstrap
from scratch.

Thanks, David