Back-port mppnccombine changes to ESM1.5 branch

[aidanheerdegen]

Collation of outputs and restarts from ACCESS-ESM1.5 models is failing with error messages like

payu: error: Thread 0 crashed with error code 9.
 Error message:
ERROR: missing at least -m from the input fileset.  Exiting.

This is because the mppnccombine executable built by spack uses the version of mppnccombine.c in the ESM1.5 fork which is 11 years old and does not contain the update to support compression

https://github.com/ACCESS-NRI/MOM5/blob/access-esm1.5/src/postprocessing/mppnccombine/mppnccombine.c

Compression was added later

43d76ba

There was also a fix to report illegal options

da52a7b

These changes should be back-ported from master to access-esm1.5.

[penguian]

@aidanheerdegen Would it be correct to just copy src/postprocessing/mppnccombine/mppnccombine.c from the master branch to the access-esm1.5 branch?

[penguian]

Comparing the commit histories, it does look like just copying the source file is correct.
https://github.com/ACCESS-NRI/MOM5/commits/master/src/postprocessing/mppnccombine/mppnccombine.c
https://github.com/ACCESS-NRI/MOM5/commits/access-esm1.5/src/postprocessing/mppnccombine/mppnccombine.c

[aidanheerdegen]

Closed with #19