Fix invalid structural object class chains in test schema

treated as a request for all required and allowed attributes of the class.
This allows:
	ldapsearch (objectClass=*) inetOrgPerson
	(requests return of all attributes of inetOrgPerson)
and
	ldapsearch (objectClass=*) extensibleObject
	(requests return of all attributes, e.g., "+" "*")

there's a bug in the test, because the 'multilinedescription' attribute is not defined anywhere; I trimmed it and added modrdn tests as well

replace with "diff foo - < /dev/null"

and wait. User must hit <NewLine> to continue. This gives the opportunity
to attach a debugger to the slapd before proceeding with the test.

Not sure why its not shutting down with -INT under FreeBSD 4,
but I have no time to figure this out.

one set of slapd.conf files.