fix: make base class KateScript and KateScriptHeader virtual
fix: make base class KateScript and KateScriptHeader virtual

svn path=/trunk/KDE/kdelibs/kate/; revision=1093032

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