Fixes for NVHPC

[mathomp4]

Description

This PR collects changes found in work with NVHPC. This is a work in progress, but with these changes, NVHPC 27.5 does compile most of MAPL. Current issues are with executables.

Related Issue

Motivation and Context

Let's MAPL build with NVHPC.

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Trivial change (affects only documentation or cleanup)

Checklist:

• I have tested this change with a run of GEOSgcm (if non-trivial)
• I have added one of the required labels (0 diff, 0 diff trivial, 0 diff structural, non 0-diff)
• I have updated the CHANGELOG.md accordingly following the style of Keep a Changelog

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