Log Message:
Changes 2.4.9:
* ldapobject.ReconnectLDAPObject.reconnect() now does kind of
  an internal locking to pause other threads while reconnecting
  is pending.
* Changes to bind- and startTLS-related operation methods of
  class ReconnectLDAPObject for more robustness
* New constant ldap.OPT_NAMES_DICT contains mapping from
  integer to variable name for all option-related constants.