reading (well, this could also be called view-auto-scrolling :-). The
behavior is *exactly* the same we have in konqueror but we use actions, so
shortcuts are configurable. Shift+Up/Down sets scroll speed. Ctrl/Shift
suspend (toggle) scrolling, etc.. This is useful when used in "continous
single page mode".

svn path=/branches/kpdf_experiments/kdegraphics/kpdf/; revision=352244