Reading the bug (I can't test it as I do not have ubuntu 13 I'm now remaining with Lt versions)
Think it's possible that they also changed there default system's tar options, If that's the case then it should be adjustable by modifieing you're terminal enviroment options for the build.
Big change that (if all you're sources are present also some old ones not avbl on the scanned websites anymore) it will build the openpli30 on ubuntu 13
How to do that ?
In open pli (3.0)You will find : openembedded-oe-core map/build-<you're target> the target is where you build fore dm800 or dm8000 or etxxx or ....
there you will find a file called env.source ,
in this file now you will find export PATH=xxxxxxxxxx...
Just add a line
export TAR_OPTIONS='--format=gnu'
reopen a new terminal,
cd ~/openembedded-oe-core/build-<you're target>
source env.source
bitbake openpli-enigma2-image
Perhaps it will work for openpli 3.0 as well on ubuntu 13 with this I'm not shure but You may give it a try