Log Message:
py-ldap: updated to 2.5.2

Release 2.5.2:
* code-cleaning in setup.py

Modules/
* PyBytes_ instead of PyString_ and added PyInt_FromLong compat macro
* moved code from version.c to ldapmodule.c
* removed obsolete back-ward compability constants from common.h
* build checks whether LDAP_API_VERSION is OpenLDAP 2.4.x
* _ldap.__author__ and _ldap.__license__ also set from ldap.pkginfo
* assume C extension API for Python 2.7+

Lib/
* removed all dependencies on modules string and types
* removed use of .has_key()
* removed class ldap.ldapobject.NonblockingLDAPObject
* new global constant ldap.LIBLDAP_API_INFO
* right after importing _ldap there is a call into libldap to initialize it
* method .decodeControlValue() of SSSResponseControl and VLVResponseControl
  does not set class attribute result_code anymore
* always use bytes() for UUID() constructor in ldap.syncrepl
* module ldif now uses functions b64encode() and b64decode()
* fixed pickling and restoring of ReconnectLDAPObject
* more modules with PEP-8 compliance
* ldap.ldapobject split into module-package

Tests/
* scripts do not directly call SlapdTestCase.setUpClass() anymore
* added LDIF test with folded, base64-encoded attribute
* added more tests for sub-module ldap.dn
* added tests for ldap.syncrepl