A wrong-arity or non-seqable error that Chez raises carried no jolt exception
class, so (class e) was :object and (thrown? ArityException …) / (thrown?
IllegalArgumentException …) never matched. Classify these by message:
incorrect-number-of-arguments -> clojure.lang.ArityException, not-seqable ->
java.lang.IllegalArgumentException, with ArityException modeled as a subclass of
IllegalArgumentException. (class e) and instance? now match the JVM.
All java-layer (records-interop.ss classifies, host-class.ss reports the class +
the ArityException token). medley 281 -> 283 passing.
jolt-o9dc