* move.c (do_page_up, do_page_down): Fix issues with not enough scrolling down/up
          and cursor centering.
        * winio.c (edit_scroll): Remove lots of needless checking of line length for
          soft wrapping code.
        * winio.c (edit_update) - Remove extra code for when updating with old_current outside
          of the new buffer boundary and centering issues.



git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4473 35c25a1d-7b9e-4130-9fde-d3aeb78583b8