back-ldap enhancements and virtual naming context (ITS#924)

[masarati@aero.polimi.it]

Full_Name: Pierangelo Masarati
Version: -devel
OS: RH Linux
URL: ftp://ftp.openldap.org/incoming/pierangelo-masarati-001211.patch
Submission from: (NULL) (131.175.154.56)


Please consider the attached patch which contains a set of enhancements 
to the back-ldap backend of the devel branch. The patch can be safely 
applied to the HEAD cvs as of saturday 9 December. In file
servers/slapd/back-ldap/Changes you'll find a list of the features that
were added to the backend (ldap handlers under avl tree instead of linked
list, a cleanup of the ldap_back_dobind routine, suffix massaging with 
some TODO remarks to discuss), small cleanup/bugfixes/enhancements and a
couple of notes on usage/possible problems.

I added a copyright notice that clearly preserves Howard Chu's credits
while clearly stating that the code has been altered.

I'd like to read some comments on the enhancements I propose, and I'd be 
pleased to contribute to improving my changes in case anyone (Howard, feel
free to criticize my work) has suggestions.

Regards, 

Pierangelo Masarati <ando@sys-net.it>