Let's use standardized names for licenses. The names used by SPDX
makes things more obvious at first glance. For complete list see:
https://spdx.org/licenses/
Note, this commit does not change any license or so...
Signed-off-by: Karel Zak <kzak@redhat.com>
Duplicate text is dealt by referring to license files. The `pg'
command does not need separated license file because the source
file has same text at top of it.
http://www.spinics.net/lists/util-linux-ng/msg05069.html
Signed-off-by: Sami Kerola <kerolasa@iki.fi>