Added support for the PostgresSqlSchemaManager to correctly parse "SET NULL",...

Added support for the PostgresSqlSchemaManager to correctly parse "SET NULL", "NO ACTION", and "SET DEFAULT" foreign key update and delete definitions.

lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php

@@ -38,10 +38,10 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
         $onUpdate = null;
         $onDelete = null;
 
-        if (preg_match('(ON UPDATE ([a-zA-Z0-9]+))', $tableForeignKey['condef'], $match)) {
+        if (preg_match('(ON UPDATE ([a-zA-Z0-9]+( (NULL|ACTION|DEFAULT))?))', $tableForeignKey['condef'], $match)) {
             $onUpdate = $match[1];
         }
-        if (preg_match('(ON DELETE ([a-zA-Z0-9]+))', $tableForeignKey['condef'], $match)) {
+        if (preg_match('(ON DELETE ([a-zA-Z0-9]+( (NULL|ACTION|DEFAULT))?))', $tableForeignKey['condef'], $match)) {
             $onDelete = $match[1];
         }