* text.c (do_delete), nano.c (do_output): Add check for length of current line
          before and after adding/deleting text, and do full refresh if it is now
          a different multiple of COLS.  Also get rid of superfluous do_refresh
          vars now that we have edit_refresh_needed.



git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4462 35c25a1d-7b9e-4130-9fde-d3aeb78583b8