AmendHub

When a file ending in .rsrc is diffed, create a temporary file with an

ASCII hex dump of all the resources found in its resource fork, in the same

format that SaDerez does, and diff against that.

Store this dumped format in the bile repo to avoid having to convert twice,

and when doing a checkout of such a file, convert it from the hexdump

format stored in the repo to an actual resource file on disk.