yadex - prepared update to follow c102 transition

[Moritz Muehlenhoff <jmm@informatik.uni-bremen.de>]

Hi QA folks,
yadex is one of the 19 packages in sarge that haven't followed
the c102 transition yet. The package is not orphaned, but it's
maintainer has stated in #120284 that NMUs are okay and in fact
all uploads after the initial release have been NMUs. I prepared
an update that rebuilds with current g++, fixes the other
outstanding bug and build-depends on libx11-dev instead of
xlibs-dev. Could any DD sponsor on upload of the package at
http://www.tzi.de/~jmm/debian/ ?

Cheers,
        Moritz