[Shared] Some renaming

[Emmanuel Lecharny]

It's probably a good timing before branches flowerish to do some 
important renaming in trunk. Here are what could be done :

LdapDN -> DN
Rdn -> RDN
Nothing more, but it impacts all the code. This is done in order to move 
forward some common API for LDAP (work in progress with SUN)

Should I go ?

--
Regards,
Cordialement,
Emmanuel Lécharny
www.nextury.com