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all: update for new MIT license

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On March 23, 2021, Nokia transferred the copyrights in the Plan 9 software
to the Plan 9 Foundation, which relicensed them under the MIT license.

This commit updates the Plan 9 from User Space license to reflect the
new base license. The vast majority of the contributions beyond the
base Plan 9 set were by me, many of them explicitly under an MIT license.
Those are all under the new MIT license now as well.

The port of mk to Unix was taken from Inferno via Vita Nuova and had
been made available under GPL, but Vita Nuova has relicensed Inferno
under the MIT license as well, to match the new Plan 9 license.

Michael Teichgraber contributed src/lib9/zoneinfo.c explicitly under
the Lucent Public License but has agreed to change the contribution
to the MIT license now used in the rest of the distribution.

There remain a few exceptions, most notably fonts.
See the root LICENSE file for full details.

The only mention of the Lucent Public License in the whole tree now
is in the LICENSE file, explaining the history.
This commit is contained in:
Russ Cox 2021-03-23 17:24:35 -04:00
parent a8bd9e9d8c
commit 88a87fadae
16 changed files with 195 additions and 490 deletions
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19
unix/NOTICE.bio
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@ -1,13 +1,8 @@
This copyright NOTICE applies to all files in this directory and
subdirectories, unless another copyright notice appears in a given
file or subdirectory. If you take substantial code from this software to use in
other programs, you must somehow include with it an appropriate
copyright notice that includes the copyright notice and the other
notices below. It is fine (and often tidier) to do that in a separate
file such as NOTICE, LICENCE or COPYING.
This is a Unix port of the Plan 9 buffered I/O library.
Please send comments about the packaging to Russ Cox <rsc@swtch.com>.
Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
Revisions Copyright © 2000-2005 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
Copyright © 2021 Plan 9 Foundation
Revisions Copyright © 2000-2005 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
@ -26,9 +21,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
----
This software is also made available under the Lucent Public License
version 1.02; see http://9p.io/plan9/license.html