repo: make file executable permissions match the cygwin derived status

In case we have a git clone from Linux that is accessed via cygwin git
the files executable status will be derived from the file content (shebang)
and won't match the git repo, leading to a initially dirty tree.

This can be worked around by setting "core.filemode=false", but let's try
to match the cygwin permissions with the in-repo permissions so this isn't
needed.

libqrencode/PKGBUILD

@@ -1,4 +1,3 @@
-#! /usr/bin/bash
 # Maintainer: micbou <contact@micbou.com>
 
 pkgbase=libqrencode

pkgfile/pkgfile.install

@@ -1,5 +1,3 @@
-#!/usr/bin/env sh
-
 post_install() {
   printf "==> Run 'pkgfile --update' to initialize the database\n"
 }

rlwrap/rlwrap.install

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 post_install() {
     cat <<EOF
 Message for rlwrap $1: