I wrote:
> Well, we've got AIXen in the buildfarm, shall we rip out those files
> and see what happens?
On looking closer, the existing special AIX code is all a no-op anyway
if HAVE_DLOPEN is defined, and there is a comment there saying it's been
obsolete since AIX 4.3. So I think we're pretty safe in removing it,
which I have now done in HEAD.
regards, tom lane