Use portable shebangs: /bin/bash -> /usr/bin/env bash

Upstream-commit-id: 6a73ca814af

Cryptlib/update.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 DIR=$1
 OPENSSL_VERSION="1.0.2k"

make-certs

@@ -1,10 +1,12 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 #
 #  Generate a root CA cert for signing, and then a subject cert.
 #  Usage: make-certs.sh hostname [user[@domain]] [more ...]
 #  For testing only, probably still has some bugs in it.
 #
 
+set -e
+
 DOMAIN=xn--u4h.net
 DAYS=365
 KEYTYPE=RSA