Manual.rst: Prefetch doc enhanced.
Ldap.php: replacement of '?' in LDAP search not processed with MODE_LDAP_PREFETCH - fixed. FE_TYPEAHEAD_LDAP_KEY_PRINTF renamed to FE_TYPEAHEAD_LDAP_ID_PRINTF
AbstractBuildForm.php: copy 'FE_TYPEAHEAD_LDAP_ID_PRINTF' to SIP seems never be done - fixed