unbreak devel/cool.io

i don't know if the comment in fb6acaf4f66450c0d50f314a562b2ef47b8b3b8e
is true or not, but the port builds fine on our poudriere. not sure if
it actually works fine. will see.
Merge pull request #329 from reallyenglish/10_1_tomoyukis

unbreak devel/cool.io