Remove an obsolete comment.
Make !strong poison useless in the same situations as !poison.
Mark decay as useless for the rot-resistant (Kvaak)
Revert "Make !strong poison useless in the same situations as !poison."

It's scheduled for removal anyway, and uselessness doesn't have a huge
effect on old games anyway (you can still toggle autopickup with \).

This reverts commit 395a70ec9b858cdfee0ee18f6f273fc1c51a7afa.
actually, we can run wizmode tests on dgl builds
make test-qw separate from test-all
don't create dumpfiles in qw stress test
allow disabling clua throttling
disable lua throttling in stress tests
run tests that don't require debug mode in normal builds
oops, this shouldn't have been changed