0.9.6.51:

0.9.6.51:
	Fix bug reported by Kalle Olavi Niemitalo on comp.lang.lisp
	... create CONDITION-CLASSes for DEFINE-CONDITION forms
		eagerly.
	... oh, but wait.  CONDITION-CLASSes are already created as part
		of the reader/writer generation, for those condition
		classes with slots, in the (find-class condition)
		incantation of install-condition-fooer-function.
	... and oh joy, reinitialize-instance on condition-classes
		removes accessors but does not add them again.  Add
		a reinitialize-instance :after method to put them back.
	... add a comment explaining that I have no idea what is meant
		to happen.  (CMUCL has a bogus CLASS-DIRECT-SLOTS on
		condition instances, which explains somewhat why it
		seems to work there...)