Remove the cpio emulator script.

The users of cpio have their own emulation by now.

.gitignore

@@ -172,4 +172,3 @@ config.status
 config.mak.autogen
 config.mak.append
 configure
-cpio

Makefile

@@ -500,7 +500,6 @@ ifneq (,$(findstring MINGW,$(uname_S)))
 	NOEXECTEMPL = .noexec
 	template_dir = ../share/git-core/templates/
 	ETC_GITCONFIG = ../etc/gitconfig
-	SCRIPT_SH += cpio.sh
 endif
 ifneq (,$(findstring arm,$(uname_M)))
 	ARM_SHA1 = YesPlease

cpio.sh

@@ -1,60 +0,0 @@
-#!/bin/sh
-#
-# Emulates some cpio behavior using GNU tar
-
-die() {
-	echo >&2 "$@"
-	exit 1
-}
-
-null=
-
-while test $# -gt 0; do
-	case "$1" in
-	-0)	null=--null;;
-	-o)	mode=o;;
-	-iuv)	;;
-	-pumd|-pumdl)
-		mode=p
-		dir="$2"
-		shift
-		;;
-	*)	die "cpio emulation supports only -0, -o, -iuv, -pumdl";;
-	esac
-	shift
-done
-
-prev=
-
-filterdirs() {
-	while read f; do
-		if test -d "$f"; then
-			# list only empty directories
-			# here we assume that directories are listed after
-			# its files (aka 'find -depth'), hence, a directory
-			# that is not empty will be a leading sub-string
-			# of the preceding entry
-			case "$prev" in
-			"$f"/* ) ;;
-			*) echo "$f";;
-			esac
-		else
-			echo "$f"
-		fi
-		prev="$f"
-	done
-}
-
-case $mode in
-o)
-	tar --create --file=- $null --files-from=-
-	;;
-p)
-	test -z "$null" || die "cpio: cannot use -0 in pass-through mode"
-	filterdirs |
-	tar --create --file=- --files-from=- |
-	tar --extract --directory="$dir" --file=-
-	;;
-*)
-	tar xvf -
-esac