Merge the two attribute syntax tables.

Merge the two attribute syntax tables.

This merges the table once found in the oLschema2ldif tool (and moved
many times) with the table used for DRSUAPI.

The OpenLDAP schema map has been updated, to ensure that despite a
number of attributes being declared as OIDs, they are actually used as
strings (as they are actually LDAP class/attribute names).

Andrew Bartlett
(This used to be commit 61f2958c84beeedcf369ccdc02afed0c8055b108)