updates to LANL/Triad copyright and license

[eclare108213]

• Short (1 sentence) summary of your PR:
  Updates LANL/Triad copyright and license per discussions with attorneys
• Developer(s):
  @eclare108213
• Suggest PR reviewers from list in the column to the right.
• Please copy the PR test results link or provide a summary of testing completed below.
  Not tested pending further discussion regarding the drivers.
• How much do the PR code changes differ from the unmodified code?
  • bit for bit
  • different at roundoff level
  • more substantial
• Does this PR create or have dependencies on Icepack or any other models?
  • Yes
  • No
• Does this PR update the Icepack submodule? If so, the Icepack submodule must point to a hash on Icepack's main branch.
  • Yes
  • No
• Does this PR add any new test cases?
  • Yes
  • No
• Is the documentation being updated? ("Documentation" includes information on the wiki or in the .rst files from doc/source/, which are used to create the online technical docs at https://readthedocs.org/projects/cice-consortium-cice/. A test build of the technical docs will be performed as part of the PR testing.)
  • Yes
  • No, does the documentation need to be updated at a later time?
    • Yes
    • No
• Please document the changes in detail, including why the changes are made. This will become part of the PR commit log.

LANL attorneys requested revisions to our copyright and license, following discussions with NOAA. This change separates the previous copyright/license notice into separate files, changes the Triad copyright date to "1998, 2017", and states that the license is standard BSD-3.

Similar changes will need to be made for Icepack.
Closes CICE-Consortium/About-Us#10
Closes CICE-Consortium/About-Us#21

[eclare108213]

I went ahead and changed the copyright notices at the tops of all the drivers. That might be appropriate if they are not significantly different from the standalone (and mct/cesm1) drivers, but since LANL/Triad has never used most of the others and they were developed elsewhere for other codes, perhaps those should be copyrighted differently? Your thoughts, please. I'm willing to leave things as they are and make adjustments moving forward, but I'm also happy to discuss and fix anything you think is amiss.

[proteanplanet]

At first look it seemed odd for Triad copyright to be marking drivers that are part of different groups' code, but upon examining the limited CICE code in which it appears, it makes sense, and it's just replacing the existing equivalent text. Thanks for fixing this to the satisfaction of various groups' legal departments.

[apcraig]

There is one other file with the copyright in it,

cicecore/drivers/unittest/opticep/CICE.F90

That file is a copy of the file in the standalone/cice directory, you should be able to copy it directly.