+ Fixed up CodeGen_PagesBlocksAttributesMigration.sql so that Down() does stuff in the correct order.  Now it properly deletes Childs pages before their Parents.
+ Fixed up CodeGen_PagesBlocksAttributesMigration.sql to add more comments to AddBlockTypeAttribute so you know which Block the attribute is for.
+ I didn't update the 2008 version of this (sorry), so I just renamed it to *.outdated.sql