[ofiwg] dlopen

[Hefty, Sean]

> I don't see on mac/dawrin, but we do see on the sles11 sp3 (don't laugh)
> systems
> we are using.
> 
> Fixed with the usual Makefile.am changes.  Is there some reason that maybe
> HAVE_LIBDL wasn't being defined earlier and now is?

I am not seeing this either.  Howard, can you confirm that this is a result of the psm2 merge (PR #1242) -- or at least wasn't in the 1.1.0 release, and submit a PR with your fix?