[Chapel Merge] Add a workaround for arch linux pic support

Branch: refs/heads/main
Revision: 38ceff6
Author: mppf
Link: Add a workaround for arch linux pic support by mppf · Pull Request #19785 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #19785 from mppf/add-pic-workaround-arch

Add a workaround for arch linux pic support

This PR arranges for CHPL_LIB_PIC to default to pic instead of none on arch linux.

See also When is setting CHPL_LIB_PIC necessary for working build? .

Reviewed by @lydia-duncan - thanks!