propelorm/Propel2 — pull request #398 by marcj (2013-05-17 20:19:14+00:00)
Title: Fixed table/column renaming bug in migration process.

If the migration process decides to rename a table or a column it needs to make sure that it does not rename multiple tables or columns to the same name. Thus I've implemented a `$renamed` array that tracks each renaming so we don't have a duplicated renaming.