[DOC] Added 3 firebird specific attributes that can be set via

PDO::setAttribute() to control formatting of date/timestamp columns:
PDO::FB_ATTR_DATE_FORMAT, PDO::FB_ATTR_TIME_FORMAT and
PDO::FB_ATTR_TIMESTAMP_FORMAT.  These attributes are strftime
format strings, and operate in the same way as the ibase.dateformat,
ibase.timeformat and ibase.timestampformat ini options.
(related to bug #36128, Interbase PDO)

ext/pdo_firebird/pdo_firebird.c

@@ -55,6 +55,10 @@ ZEND_GET_MODULE(pdo_firebird)
 
 PHP_MINIT_FUNCTION(pdo_firebird) /* {{{ */
 {
+	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_DATE_FORMAT", (long) PDO_FB_ATTR_DATE_FORMAT);
+	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_TIME_FORMAT", (long) PDO_FB_ATTR_TIME_FORMAT);
+	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_TIMESTAMP_FORMAT", (long) PDO_FB_ATTR_TIMESTAMP_FORMAT);
+
 	php_pdo_register_driver(&pdo_firebird_driver);
 
 	return SUCCESS;