Suggested by Stefano Lattarini. Run "make update-copyright".
* doc/bison.texinfo: Tag rpcalc.y snippets. Add missing includes. (Rpcalc Rules): Don't issue leading tabs. Complete an Info menu. Use @result. * examples/rpcalc/local.mk: New. * examples/rpcalc/rpcalc.test: New. * examples/local.mk: Use them. * examples/mfcalc/mfcalc.test: Remove dup test. * examples/test: Disable debug traces.