LDAP where DN does not include UID attribute

Following a discussion on the pgsql-admin list <
http://archives.postgresql.org/pgsql-admin/2009-09/msg00075.php>, I have
created a patch to (optionally) allow PostgreSQL to do a LDAP search to
determine the user's DN (as is done in Apache, MediaWiki, Bugzilla, et al.)
instead of building the DN from a prefix and suffix.
This is necessary for schemas where the login attribute is not in the DN,
such as is described here <
http://www.ldapman.org/articles/intro_to_ldap.html#individual> (look for
"name-based").  This patch is against PostgreSQL 8.4.0 from Debian
Lenny-backports.  If this would be a welcome addition, I can port it forward
to the latest from postgresql.org.
Thanks in advance for your feedback.
Robert