Bug#861575: libgtkd-3-0 and libvted-3-0 shlibs need a version

[Matthias Klumpp]

Okay, the actual problem here is not the shlibs file, but upstream
breaking API without bumping the SONAME of the library.
I will raise this upstream, so we can find a way to deal with this
issue for all distros and not just Debian (the result might be that we
just always bump the version each time a new library is released).

Meanwhile, I think it's safe to let the package (and Tilix) migrate
back to testing.

Cheers,
    Matthias