wxWidgets license

[Andrea D'Amore]

We should add a license for wxWindows in
portmgr/jobs/port_binary_distributable.tcl

>From page [1]:
 "The wxWindows Licence is essentially the L-GPL (Library General
Public Licence), with an exception stating that derived works in
binary form may be distributed on the user's own terms. This is a
solution that satisfies those who wish to produce GPL'ed software
using wxWidgets, and also those producing proprietary software."

I'm no license expert, but from what I read it's based on lgpl-3,
wxWindows Licence version is 3.1 due to "an ambiguity in Clause 2"
that  was removed in 2005, so I'm going to duplicate the entry for
lpgl3 conflicts and rename it wxwidgets or wxwl-3.1 .

Any thoughts?

-- 
Andrea

[1] http://www.wxwidgets.org/about/newlicen.htm