+ ;; Nice though it might be to return a nontrivial
+ ;; hash value for other instances (especially
+ ;; STANDARD-OBJECTs) there seems to be no good way
+ ;; to do so. We can't even do the CLASS-NAME trick
+ ;; (as used above for STRUCTURE-OBJECT) because
+ ;; then CHANGE-CLASS would cause SXHASH values to
+ ;; change, ouch! -- WHN recording wisdom of CSR