[$] A license change for Nmap

It may be kind of an obvious statement, but licensing terms matter in ourcommunities. Even a misplaced word or three can be fatal for a license,which is part of the motivation for the efforts to reduce licenseproliferation in free-software projects. Over the last few months, variousdistribution projects have been discussing changes made to the license forthe Nmap network scanner; those changesseemed to be adding restrictions that would make the software non-free, thoughthat was not the intent. But the incident does serve to show the importance oflicense clarity.