in printopt(), add DB's tweaks to make sure longflag isn't passed in

in printopt(), add DB's tweaks to make sure longflag isn't passed in
when HAVE_GETOPT_LONG isn't defined, and rework the special case of
options that are ignored for Pico compatibility so that they display
more neatly when HAVE_GETOPT_LONG isn't defined; in usage(), fix an
erroneous #ifdef that resulted in the -d/--rebinddelete and -k/--cut
options' not being printed when NANO_SMALL was defined

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2410 35c25a1d-7b9e-4130-9fde-d3aeb78583b8