GPLv3-licensed ports

[Vitaly Magerya]

Charlie Kester wrote:
> Will someone with edit privileges for the wiki please add the following to the
> list of GPLv3-licensed ports (http://wiki.freebsd.org/PortsAndGPLv3)?
> 
> 	math/ised 
> 	misc/xsw 
> 	sysutils/rdup

And lang/ikarus too while we're at it.

I don't understand the purpose of that list though. What does "legal
decisions regarding the use of GPLv3 in our ports system" mean?