Could someone commit ports/172355?

[Naram Qashat]

This PR was submitted to allow portconf to handle dash symbols (as well as plus 
symbols), which is highly important because of the new OPTIONS framework. It was 
submitted in Oct 2012 but has been untouched since then. I have been using the 
patch myself and it works fine, without it, I would be unable to use something 
like "xorg-servers_SET=WHATEVER" in port.conf at all.

Thanks,
Naram Qashat