Log Message:
Changes 2.3.0:
* Support for setuptools (building .egg, thanks to Torsten)
* Support for matched values control
* Fixed ldif
* ldap.schema.models: SUP now separated by $
* Added constant MOD_INCREMENT to support
  modify+increment extension

Changes 2.2.1:
* OpenLDAP 2.3+ required now to build.
* Added support for Cancel operation ext. op. if supported
  in OpenLDAP API of the libs used for the build.
* Removed deprecated code for setting options by name
* Added l_ldap_cancel()