[Chapel Merge] Fix c2chapel on MacOS

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Branch: refs/heads/main
Revision: 5f07978bb17ef7faf0c9e9c7146d03ad4fd91d76
Author: jabraham17
Link: Fix c2chapel on MacOS by jabraham17 · Pull Request #26881 · chapel-lang/chapel · GitHub
Log Message:
Fix c2chapel on MacOS (#26881)

Fixes an issue where extra arguments were not being properly passed to
the preprocessor for c2chapel. This is done by removing the dummy
cppFlags, instead solely relying on parse_known_args.

This PR also cleans up the testing for c2chapel

Resolves [Bug]: c2chapel tests fail on MacOS · Issue #26831 · chapel-lang/chapel · GitHub

  • start_test test/c2chapel on MacOS with Python 3.13
  • start_test test/c2chapel on Linux64 with Python.10
  • start_test test/c2chapel on Linux64 with Python.13
  • cd tools/c2chapel/test && ./tester.sh on MacOS
    • python 3.9
    • python 3.10
    • python 3.11
    • python 3.12
    • python 3.13
  • cd tools/c2chapel/test && ./tester.sh on Linux64
    • python 3.10
    • python 3.13

[Reviewed by @benharsh]

Compare: Comparing 97e8d9a2c7bd73129ff21067f966445f4166b20f...72bd49aa6b3401e2b6d9682fb18e42c42bbbf10d · chapel-lang/chapel · GitHub

Diff:
M tools/c2chapel/c2chapel.py
D tools/c2chapel/test/help.2.good
M tools/c2chapel/test/help.good
D tools/c2chapel/test/no-args.2.good
D tools/c2chapel/test/no-args.3.good
M tools/c2chapel/test/no-args.good
M tools/c2chapel/test/tester.sh
https://github.com/chapel-lang/chapel/pull/26881.diff