(ITS#3791) start_tls while chasing referrals

[tigger@gentoo.org]

Full_Name: Rob Holland
Version: 2.2.26
OS: Gentoo Linux
URL: http://bugzilla.padl.com/show_bug.cgi?id=210
Submission from: (NULL) (80.3.128.9)


Please see the bug mentioned in the URL which provides a patch to enable clients
to use start_tls on referrals via the rebind_proc callback.

This is needed in master+slaves infrastructures which require start_tls to be
used.

This wasn't previously possible as the "are we already using tls?" sanity check
in ldap_start_tls_s didn't check the default connection, merely the first
connection.