Moving the debian directory to a subdirectory (anything but <root>/debian) is fine with me.
If you do not intend to build Debian packages yourself you don't have to include anything. svn-buildpackage takes care of "merging" your tarball and the debian/ directory that exists on svn.debian.org automatically.
As far as the manpages are concerned I believe it would be good to include them not only in the debian/ directory but rather somewhere else, so all your targeted distributions benefit from those.
Moving the debian directory to a subdirectory (anything but <root>/debian) is fine with me.
If you do not intend to build Debian packages yourself you don't have to include anything. svn-buildpackage takes care of "merging" your tarball and the debian/ directory that exists on svn.debian.org automatically.
As far as the manpages are concerned I believe it would be good to include them not only in the debian/ directory but rather somewhere else, so all your targeted distributions benefit from those.
-- Stephan