expected. (reported by Tim Daly Jr)
* fixed bug #391: complicated :TYPE intersections in slot
definitions no longer cause an error in PCL internals.
+ * fixed bug #392: plugged a hole in the obsolete-instance protocol.
* bug fix: FILE-STRING-LENGTH is now external-format sensitive,
returning the number of octets which would be written to the
file-stream. (thanks to Robert J. Macomber)