Anonymous bind is broken

[justinmassiot]

(Imported from https://github.com/dr4Ke/ldap-to-svn-authz/issues/4)

With commit 05bfe09 (merged by 630e7cd), I no longer can bind my LDAP server anonymously. If I replace back "ldapobject.bind_s" to "ldapobject.bind" everything goes well.
Is it a real need to "Bind to LDAP server synchronously"?

[justinmassiot]

Idea: try with synchronous bind ldapobject.bind_s, then fallback to standard connection ldapobject.bind .