Update Narwhal Port

[apcraig]

PR checklist

• Short (1 sentence) summary of your PR:
  Update Narwhal port, add narwhal_intelhpcx

• Developer(s):
  apcraig

• 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.
  All results pass, regression testing not done due to lack of baseline on Narwhal.

• 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 provide any additional information or relevant details below:

• Update narwhal modules

• Add narwhal_intelhpcx

• Change ICE_MACHINE to ICE_MACHCOMP in cice.launch.csh to provide greater flexibility

• Add debug output on abort in ice_domain