[chapel-lang/chapel] Make FFTWlib primer's compopts conditional

Branch: refs/heads/master
Revision: e7fb57e
Author: e-kayrakli
Log Message:

Merge pull request #16253 from e-kayrakli/fftwlib-primer-compopts

Make FFTWlib primer’s compopts conditional

With some tests moved to a CS system, we need to adjust this test’s compopts
to adapt for the FFTW module’s setup on CS systems. This PR sets include and lib
paths based on CHPL_TARGET_PLATFORM.

Confirmed on CS that the test is not skipped and runs successfully.

Thanks @ronawho for the hint!

Trivial, not reviewed.

Modified Files:
M test/release/examples/primers/FFTWlib.compopts

Compare: https://github.com/chapel-lang/chapel/compare/647e0530dbac...e7fb57e90a7b