Slapd blows away rdn (ITS#475)

[pturgyan@umich.edu]

Full_Name: Paul R. Turgyan
Version: 1.2.9
OS: Solaris 5.6 
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (141.211.168.36)


slapd allows an entry's rdn to be replaced.  If a
ldapmodify user issues a replace operation for the rdn 
attribute,  slapd will blow away all the corresponding
attributes,  and remove the rdn from the associated indexes.
This makes the entry hard to find.

We have modified servers/slapd/back-ldbm/modify.c to correct this
problem.  We have yet to put this change into production,  but are
planning to real soon.