Add test cases in very first position for hang-on-exit, both in (normal) quick-exit and TCL_FINALIZE_ON_EXIT=1 modes.
Refrain from calling TclFinalizeThreadData() in quick-exit case as it is useless (just memory freeing). Superficially fixes [Bug 132fad6f]; that bug is still exerciseable thanks to recent additions to the test suite that exercise full finalization.
merge trunk