README.source

The +dfsg.orig.tar.bz2 upstream source tarball is obtained by:
- renaming the .spkg to .tar.bz2 (the debian/watch file does this)
- unpacking
- removing all mercurial files (.hg*)
- converting src/graphs.db to text using:
   sqlite3 graphs.db ".dump" > graphs.dump
- removing graphs.db
- renaming the directory with an appended +dfsg
- repacking with a +dfsg version
