scapy + py26-scapy

[Joshua Root]

Why do we have 'scapy' (which uses python25) and also 'py26-scapy'? It
looks like Scapy is an application that happens to use python, so there
should only be one port (possibly with variants to select a python
version if there's a good reason to want to change.)

The py25-foo, py26-foo etc. naming convention should be used for ports
that install a python module that will be used by other things,
potentially using different python versions.

- Josh