New v3 failures on AIX. mt_alloc?

[David Edelsohn]

>>>>> Benjamin Kosnik writes:

Ben> I don't know why this is happening. The libstdc++.log files are not
Ben> helpful. Do you have any ideas?

	The testcases appear to be failing in mt_allocator::allocate(),
specifically 

              _S_bin[bin].first[0] =
                static_cast<block_record*>(::operator new(_S_options._M_chunk_s
ize));

Is the new allocatory relying on SVR4 static constructor ordering between
shared libraries and main application, similar to the problems we had with
IO requiring src/globals_io.cc?

David