t/lib-httpd: use write_script to copy CGI scripts

Using write_script will set our shebang line appropriately
with $SHELL_PATH. The script that is there now is quite
simple and likely to succeed even with a non-POSIX /bin/sh,
but it does not hurt to be defensive.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/lib-httpd.sh

@@ -105,10 +105,14 @@ else
 		"Could not identify web server at '$LIB_HTTPD_PATH'"
 fi
 
+install_script () {
+	write_script "$HTTPD_ROOT_PATH/$1" <"$TEST_PATH/$1"
+}
+
 prepare_httpd() {
 	mkdir -p "$HTTPD_DOCUMENT_ROOT_PATH"
 	cp "$TEST_PATH"/passwd "$HTTPD_ROOT_PATH"
-	cp "$TEST_PATH"/broken-smart-http.sh "$HTTPD_ROOT_PATH"
+	install_script broken-smart-http.sh
 
 	ln -s "$LIB_HTTPD_MODULE_PATH" "$HTTPD_ROOT_PATH/modules"
 

t/lib-httpd/broken-smart-http.sh

@@ -1,4 +1,3 @@
-#!/bin/sh
 printf "Content-Type: text/%s\n" "html"
 echo
 printf "%s\n" "001e# service=git-upload-pack"