Over the last days I have taken a shot at getting the packaging of the gnutls dependency chain in shape. I have now got packages of gnutls13 1.4.0, libtasn1-3 0.3.4 and opencdk8 0.5.8 which at least when reading the debian diff seem to be ok. Once libtasn1-3 is in the archive gnutsl12 could be updated to 1.2.11 and we could try to get rid of libtasn1-2 and gnutls11.
The packages currently in the archive have an unreadable diff, as they are not based on upstream's tarballs but on sources pulled from cvs.
I hope the package maintainer Matthias Urlichs will reappear soon and can make use of my patches.
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