Slight patch to Perlbal.pm

[dormando]

Ask Bjørn Hansen wrote:
> 5.*8* is more than 5 years old now, so 5.6 is definitely a reasonable 
> requirement.
> 
> Are there even any systems with kqueue/epoll/... support that don't have 
> 5.8?
> 

Early fedora core? One of them funky redhats did it.

... uh... Yeah it looks fine actually. I think Mark's going to 
review/commit.

Also, five years? Damn I feel old...

-Dormando