Drop of portindex

[Michael Nottebrock]

Robin Schoonover wrote:

> I think we may want to record what the license for the port is in the
> Makefile.

This has been proposed a number of times, however, I'm quite convinced this is 
too ambitious - many big packages (for example KDE) come with a mixture of 
licenses and auditing them for each release is more effort than can be 
reasonably warranted.