Merge upstream branch
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
index 6b80973..baf3d13 100644
--- a/system/database/drivers/cubrid/cubrid_forge.php
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -164,7 +164,7 @@
 		}
 		*/
 
-		$sql .= $this->db->protect_identifiers($table).' ('.$this->_process_fields($fields);
+		$sql .= $this->db->escape_identifiers($table).' ('.$this->_process_fields($fields);
 
 		// If there is a PK defined
 		if (count($primary_keys) > 0)
@@ -200,11 +200,12 @@
 	/**
 	 * Drop Table
 	 *
+	 * @param	string	table name
 	 * @return	string
 	 */
 	public function _drop_table($table)
 	{
-		return 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table);
+		return 'DROP TABLE IF EXISTS '.$this->db->escape_identifiers($table);
 	}
 
 	// --------------------------------------------------------------------