Remove cruft from fusl

fusl/tools/install.sh

-#!/bin/sh
-#
-# This is an actually-safe install command which installs the new
-# file atomically in the new location, rather than overwriting
-# existing files.
-#
-
-usage() {
-printf "usage: %s [-D] [-l] [-m mode] src dest\n" "$0" 1>&2
-exit 1
-}
-
-mkdirp=
-symlink=
-mode=755
-
-while getopts Dlm: name ; do
-case "$name" in
-D) mkdirp=yes ;;
-l) symlink=yes ;;
-m) mode=$OPTARG ;;
-?) usage ;;
-esac
-done
-shift $(($OPTIND - 1))
-
-test "$#" -eq 2 || usage
-src=$1
-dst=$2
-tmp="$dst.tmp.$$"
-
-case "$dst" in
-*/) printf "%s: %s ends in /\n", "$0" "$dst" 1>&2 ; exit 1 ;;
-esac
-
-set -C
-set -e
-
-if test "$mkdirp" ; then
-umask 022
-case "$2" in
-*/*) mkdir -p "${dst%/*}" ;;
-esac
-fi
-
-trap 'rm -f "$tmp"' EXIT INT QUIT TERM HUP
-
-umask 077
-
-if test "$symlink" ; then
-ln -s "$1" "$tmp"
-else
-cat < "$1" > "$tmp"
-chmod "$mode" "$tmp"
-fi
-
-mv -f "$tmp" "$2"
-test -d "$2" && {
-rm -f "$2/$tmp"
-printf "%s: %s is a directory\n" "$0" "$dst" 1>&2
-exit 1
-}
-
-exit 0