"elif" keyword, handling dnl comments better, and marking trailing whitespace. Patch by Mike Frysinger. git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5506 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5367 35c25a1d-7b9e-4130-9fde-d3aeb78583b8