subversion and MacOSX bundles (specifically keynote presentations)

Folks,
        Has anyone had any luck / looked into supporting MacOSX bundles
that are version controlled by subversion? Here's the scenario:

I have a directory off of my home directory that I keep all the
important files I want to share between machines. I've started to use
keynote instead of powerpoint to do my presentations. A keynote
presentation is actually an OSX bundle. That is, it is a directory with
all the content files in it, but it appears in the finder as a single
file. SVN maintains the integrity of bundles without a problem, so far
as I can tell.

I checked a presentation into my svn repo last night. The
svn add --recursive command made my life much easier.

I made a bunch of alterations today and tried to checkin again. svn st
failed with:

grey:~/Desktop/Life/Talks] seth% svn st
svn: No such file or directory
svn: svn_io_file_open: can't open `thesis-outline-april-2003.key/.svn/entries'

On further examination, it appears that keynote intentionally rewrites
the entire bundle on each save, thereby wiping out the existing .svn
directory in the save file.

Is there any way to make this work? Give the current state, I think
that I'm going to have to tgz the presentations to put them into svn,
but I'd really like to figure out a better way.

Thanks,
 Seth

-- 
it is by will alone I set my mind in motion
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