Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
No functional change intended.
Third parties are encouraged to change the license on any files which have
a 4-clause license contributed to the NetBSD Foundation to a 2-clause
license. We would also encourage you to inform us about these files, so
that we can continue to track the many places in which NetBSD is used.
http://www.netbsd.org/about/redistribution.html#why2clause [1]
Requested by: joel@