* etc/services - sync with NetBSD-8
* etc/protocols - sync with NetBSD-8
* Sync some manuals from bin & sbin with NetBSD-8
* sbin/newfs_v7fs: sync with NetBSD-8
* sbin/newfs_msdos: sync with NetBSD-8
* bin/stty: sync with NetBSD-8
* bin/rmdir: sync with NetBSD-8
* bin/ls: sync with NetBSD-8
* Sync bin/df with NetBSD-8
* Drop main() prototype.
