plperl regression tests

Is it possible to test for plperl and add some plperl tests to the 
regression suite?

I see the pg_regress installs and runs with_perl=no.
The problem is that cygwin postgres builds and runs fine, only the perl 
extensions fails (IPC problem when loading the huge perl dll).

So I really would like to add a simple plperl testcase to the standard 
distro. Just the sample from the plperl.sgml would be fine.
Any general objections?
I'll come up with a patch if not, which will check if the postmaster has 
plperl support and use it then.
-- 
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/