Revert "CAS-13211 : Set the psfcutoff parameter explicitly in the test_tclean call for the briggsbwtaper. This is to try to debug the PR failure that happens only in the PR tarball, but not in a local tarball with latest trunk merged in." Also revert last commit by JW. Also undid the "checkfinal" fix. The idea is to test if now, all unrelated test failures disappear.
This reverts commit 550ae10d4e97b72b3167d6e5b2f812cdabac8a18.