fix to BUILDnceplibs and add nvhpc support

[laurenchilutti]

Description

Fixing BUILDnceplibs - previously we cloned various GitHub repositories without specifying a branch or tag so we were always getting the very latest development branch updates. Now I am cloning and checking out the latest release tags.

Also including updates from @bensonr which add nvhpc compiler support to the build platform.

Fixes #18

How Has This Been Tested?

Tested on Gaea c4 and c5 and amd dev box

Checklist:

Please check all whether they apply or not

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] Any dependent changes have been merged and published in downstream modules

[laurenchilutti]

@bensonr I have merged in your branch with the nvhpc compiler updates and implemented your suggestion to BUILDnceplibs. I will be testing these changes on our amd dev box and will update this PR description shortly to include the nvhpc updates.

[laurenchilutti]

@bensonr This is ready for a re-review. If it looks good please to merge it for me.