== Importing a new upstream tarball ==

After downlading the sources debian/repack.py is used 
to repackage the tarball

    icedove/debian/repack.py -p icedove -u 16.0.1 -c xz \
           thunderbird-31.1.1.source.tar.bz2
    cd icedove
    git-import-orig ../icedove_31.1.1.orig.tar.xz
    
Alternatively uscan should do the right thing:

    git-import-orig --uscan
