Use env shebangs everywhere (#1515)

Change all shebangs to use '#!/usr/bin/env bash'.
This increases portability to platforms which do not cohere to the FHS.

demo/async/run.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ADDR=ipc:///tmp/async_demo
 COUNT=10

etc/codecov.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 Garrett D'Amore <[email protected]>
 # Copyright 2017 Capitar IT Group BV <[email protected]>

etc/coverage.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 Garrett D'Amore <[email protected]>
 # Copyright 2017 Capitar IT Group BV <[email protected]>

etc/format-check.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Copyright 2016 Garrett D'Amore <[email protected]>
 #

src/tools/nngcat/nngcat_ambiguous_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_async_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_dup_proto_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_help_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_incompat_test.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_pubsub_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_recvmaxsz_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_stdin_pipe_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>

src/tools/nngcat/nngcat_unlimited_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #
 # Copyright 2018 Staysail Systems, Inc. <[email protected]>