Generalize the new qQ std-mode tests to all int codes (bBhHiIlLqQ).

Unfortunately, the std-mode bBhHIL codes don't do any range-checking; if
and when some of those get fixed, remove their letters from the
IntTester.BUGGY_RANGE_CHECK string.  In the meantime, a msg saying that
range-tests are getting skipped is printed to stdout whenever one is
skipped.