QString::null -> isNull(), patch by Andre Eisenbach <int2str@gmail.com>
QString::null -> isNull(), patch by Andre Eisenbach <int2str@gmail.com>

svn path=/trunk/kdelibs/kate/; revision=358522

sandsmark/kate,hlamer/kate,DickJ/kate,hlamer/kate,hlamer/kate,jfmcarreira/kate,cmacq2/kate,hlamer/kate,hlamer/kate,hlamer/kate,cmacq2/kate,cmacq2/kate,hlamer/kate,sandsmark/kate,hlamer/kate,DickJ/kate,sandsmark/kate,DickJ/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,DickJ/kate,jfmcarreira/kate,sandsmark/kate