Fix DIT rules to allow extensibleObject in AUX
unifdef -DSLAP_EXTENDED_SCHEMA

as an iterator!

no normalizer, a_nvals = a_vals.

	schema engine updated (but not schema routines so things don't run yet)
	nvalues mostly populated, enough for tests 0-2 to pass
	schema routines needs lots of work
	modify/mods codes needs lots of work

applied (and disabled via schemacheck off).  Removed add-rdn-values flag.

w/ implicit default rules allowing any auxiliary class to be mixed in

internal error.  It *should* have been added.

Functionality not changed (excepting one error message).

Coverted LDAP_LOG macro to use subsystem ID int values instead of string values