Fix the SQL statement to select the sequence minimun value when the schema name is case sensitive

lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php

@@ -237,7 +237,7 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
             $sequenceName = $sequence['relname'];
         }
 
-        $data = $this->_conn->fetchAll('SELECT min_value, increment_by FROM ' . $sequenceName);
+        $data = $this->_conn->fetchAll('SELECT min_value, increment_by FROM ' . $this->_platform->quoteIdentifier($sequenceName));
         return new Sequence($sequenceName, $data[0]['increment_by'], $data[0]['min_value']);
     }