New package for rocrail - upstream source tarball has strange directory structure

[Koen Beek]

Hi,

 I have been working on getting bugfixes in debdiff files up to now
(sysinfo mainly) but would like to try to create a package from
upstream from scratch

 Bug 172329 (https://bugs.launchpad.net/ubuntu/+bug/172329) was opened
to create a package for rocrail
(http://sourceforge.net/projects/rocrail/, http://www.rocrail.net)

 the source tarball can be downloaded from sourceforge here : wget
http://dfn.dl.sourceforge.net/sourceforge/rocrail/rocrail-1.0.0-harvest-svn2277.tar.gz

 The directory structure is causing me some headaches though

 it is /tmp/rocrail-1.0.1/Rocrail/...
 I would have expected rocrail-1.0.0/...

 can someone guide me to what is the best way to handle this upstream
tarball concerning this directory structure
 - should I ask upstream to correct the tarball
 - should I change the tarball myself
 - should I change the structure and put all these changes in the
diff.gz fill (Is there a way to not make this .diff file huge)
 - ...

    thanks,

       Koen