(ITS#4458) global slapo-rwm does not handle passwd_exop

[ando@sys-net.it]

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


This essentially happens because o_req_ndn is empty before getting to the
frontend passwd_exop handler.  Need to make slapo-rwm passwd_exop-aware.

p.