(ITS#4428) OPenldap proxycache issue with binding

[ashish@ratboy.net]

Full_Name: Ashish Gawarikar
Version: 2.3.20
OS: Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (63.211.143.38)


When proxycache gets a failed bind attempt on a given connection, all
subsequent operations on that SAME connection result in ldap error code 80.  
This includes all rebind attempts, even if the rebind should have succeeded.

By contrast, when talking to a normal LDAP server with the same behavior,
subsequent bind attempts on the same connection succeed.