fixed potential bug with page with unspecified dpi
updated scrollbar loop prevention code
cmdline options have precedence.
fixed mapping of vertical and horizontal line annotations
Make npdjvu (do not use!) compile
changes to qdjvuwidget::setPage

This no longer keeps the page position by default.
But it does when argument 'keep' is true.
nextPage and prevPage call setPage with keep=true.
fixed focus issues and actions for ctrl+f
refresh autotools, and check location with something more unique than README