(ITS#4547) back-ldap/meta doesn't cache privileged conns at bind

[ando@sys-net.it]

Full_Name: Pierangelo Masarati
Version: HEAD,re23,re24
OS: irrelevant
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (81.72.89.40)
Submitted by: ando


When re-inserting the connection with the new DN after bind, if the bound DN is
privileged the conn field must be reset.

p.