MacOS X 10.5

Is it just me, or does MacOS X 10.5 (specifically 10.5.7) have a
working poll() implementation that supervise plays nice with?  Rob
Mayoff reported that 10.4 does not, and it is not detected by
trypoll.c:

http://marc.info/?l=log&m=111515776629581&w=2

I'm going to add some autoconf magic / evil to my fork to fall back to
select() on certain platforms, such as MacOS X prior to 10.5.  Any
reports of additional platforms that I ought to blacklist would be
appreciated.