Don't distribute the results of running Lemon, as we distribute Lemon

Don't distribute the results of running Lemon, as we distribute Lemon
ourselves.

Clean up various bits of "distribute" vs. "don't distribute" stuff in
the process - use similar names, and make the "distribute vs. don't
distribute" distinction the same as the "don't clean with "make
distclean" vs. clean with "make distclean"" distinction.

svn path=/trunk/; revision=47485