- Fixed awful scrolling in do_int_speller. Problem was findnextstr() calling edit_upd...

- Fixed awful scrolling in do_int_speller. Problem was findnextstr() calling edit_update(), though screen updating is not its business Added checks in do_search() and do_replace_loop() to do the checks.  It really should not be done here, as some function in winio.c should handle this, but I can't seem to find a good place to put this check

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1351 35c25a1d-7b9e-4130-9fde-d3aeb78583b8