New AIX template failures

[David Edelsohn]

>>>>> Gabriel Dos Reis writes:

Gaby> Nobody has touched the valarray stuff recently so that must be coming
Gaby> from somewhere else (probably compiler change).  I suspect the same
Gaby> might be true for __cmath_power<>.

	The compiler change causing the failures is not necessarily a
bug. Mark's recent changes seem to require even more template
instantiation, so those instantiations need to be added to the libstdc++
testcases.

David