Some more test patches (for implicit block in FLET and LABELS), new tests for those, and tests that lambda-list-keywords can be bound
Test that multiple-value-setq returns the primary value of the form even if no variables are assigned
Added more tests on classes of objects un *universe*. Inspired by a bug found by Bruno Haible in cmucl
Define the declaration/type conflict tests only if the system actually warnings on bogus declarations