Dupent subtype example

["Kurt D. Zeilenga" <Kurt@OpenLDAP.org>]

Jim,

I'm thinking the I-D needs an example dealing with
subtyping.  If I read the I-D correctly, I note that
requesting "name" has different semantics than requesting
each subtype of "name" (I believe this is a good thing).

5.2 could be modified such that user1 was:

   dn: cn=User One,dc=example,dc=net
   cn: User One
   mail: user1@example.net

   dn: cn=User Two,dc=example,dc=net
   cn: User2
   givenName: User
   mail: user2@example.net
   mail: usertwo@example.net

and both "name" and "mail" where specified in the control.

   dn: cn=User One,dc=example,dc=net
   cn: User One
   control: 2.16.840.1.113719.1.27.101.2

   dn: cn=User One,dc=example,dc=net
   mail: user1@example.net
   control: 2.16.840.1.113719.1.27.101.2

   dn: cn=User Two,dc=example,dc=net
   cn: User2
   mail: user2@example.net
   control: 2.16.840.1.113719.1.27.101.2
 
   dn: cn=User Two,dc=example,dc=net
   cn: User2
   mail: usertwo@example.net
   control: 2.16.840.1.113719.1.27.101.2

   dn: cn=User Two,dc=example,dc=net
   givenName: User
   mail: usertwo@example.net
   control: 2.16.840.1.113719.1.27.101.2

   dn: cn=User Two,dc=example,dc=net
   givenName: User
   mail: user2@example.net
   control: 2.16.840.1.113719.1.27.101.2