1) "ftpd/ftpcmd.c" is never removed by the target "distclean";
thus is never regenerated by Bison, once the file already is
present.That is as it should be, we don't want to require bison to compile inetutils. There is a target called maintainer-clean which will clean out any files not part of the "source tree". GNU Bison is required to generate ftpcmd.c. But we should have a better check for it when the corresponding .c file doesn't exist, and bail out early.
