tkdiff - insecure temporary file

The last update of tkdiff contained a programming error which is
fixed by this version.  For completeness we’re adding the original
advisory text:

>
> Javier FernĂĄndez-Sanguino PeĂąa from the Debian Security Audit project
> discovered that tkdiff, a graphical side by side “diff” utility,
> creates temporary files in an insecure fashion.
>
>
>

For the old stable distribution (woody) this problem has been fixed in
version 3.08-3woody1.

For the stable distribution (sarge) this problem has been fixed in
version 4.0.2-1sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 4.0.2-4.

We recommend that you upgrade your tkdiff package.