The Portable Linux Processor Affinity (PLPA) project has been depreciated in
favour of the Portable Hardware Locality (hwloc) project. So the license
exception present in previous versions of htop is obsolete and thus removed.
The text of COPYING has been updated to the latest upstream license text
of GPL-2 from the Free Software Foundation, Inc. (FSF).
There are only editorial changes like line wrapping, removing page breaks,
updating the "19yy" to "<year>" and changing the FSF address.