use memset instead of own loop stuff
use memset instead of own loop stuff

svn path=/trunk/kdelibs/kate/; revision=175458

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