svn revs as version number

[Felix Natter <fnatter@gmx.net>]

hi,

finally we've talked the JMapViewer maintainers into making proper
release archives, and they did, but unfortunately, they used svn
revision numbers instead of adequate versions:

http://svn.openstreetmap.org/applications/viewer/jmapviewer/releases/29618/JMapViewer-29618-Source.zip

=> The question is: Can we use "29618" (or "svn29618" or "r29618") as
the debian version number (consistent with upstream) or do we have to
use "0.0+svn29618"?

A pointer to debian policy is appreciated. I couldn't find anything
here:
  http://www.debian.org/doc/debian-policy/

Thanks and Best Regards,
-- 
Felix Natter