configure accepts the new option --enable-single-binary to build all the

selected programs in a single binary called "coreutils". The selected

programs can still be called directly using symlinks to "coreutils" or

shebangs with the option --coreutils-prog= passed to this program. The

install behavior is determined by the option --enable-single-binary=symlinks

or --enable-single-binary=shebangs (the default).