Revision 417568

Working on the Link ResourceType Module, I kept finding bugs in Cocoon2.1.6, so I reinstalled/reorganized my development system with Cocoon2.1.9 and a fresh copy of Lenya1.3.  Fixed some bugs with Hierarchical content while testing the new installation.

Updated INSTALL-SRC.txt with instructions based on new installation (especially how Cocoon's BAT files are formatted wrong.)
Bug fixes for Hierarchical Content.
Migrate: Use live revision for edit revision if no authoring revision (unlikely in Lenya1.2).
Added Edit Module for entry into Flat Resource maintenance.
Fixed Form Module's post.xsp to handle checkboxes (multiple fields with the same name).
Added ResourceTransformer for changing structural information of Resources.  Still being tested.
Added StringSource and VirtualSourceFactory.  The Cocoon project might benefit from them.  VirtualSourceFactory needs to be thread-safe.