(ITS#4263) back-bdb delete leaves stale IDL cache entry

[hyc@OpenLDAP.org]

Full_Name: Howard Chu
Version: 2.3.13
OS: 
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (24.126.120.178)
Submitted by: hyc


back-bdb's dn2id_delete function deletes an entry's subtree dn2id index node
directly, instead of using bdb_idl_delete_key. If that node was in the IDL cache
it will remain there. If a node with the same DN is then re-added, subtree
searches on that DN will get the old IDL.