You should use a patch management system. This is easier to track change
this way. To delete lines from .desktop file, you could also use sed if
you prefer to not clutter your package with one-liner patch (but patch
is easier to read and to export).
Now package uses quilt.
I think that long description in debian/control are too short. After
reading them, I wonder what "zlibrary core" is.
Enhanced description a bit.
You may want to use dh_link to add symbolic links to your
package.
dh_link works on either one or all binary packages, my situation is only the last binary package 'fbreader'. Thanks for idea, though.
Moreover, I think that the trick that you added at the end of
debian/rules to satisfy lintian is not needed anymore.
Done.
At least, the package does not seem to compile in a freshly updated
pbuilder: