refs #5368 use /usr/bin/env bash instead of /bin/bash for scripts

git-svn-id: file:///svn/toku/tokudb@48325 c7de825b-a66e-492c-adef-691d508d4ae1

portability/tests/ensure_memcheck_fails.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 test $# -ge 1 || exit 1
 

src/tests/run_abortrecover_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ $# -lt 2 ]]; then exit 1; fi
 

src/tests/run_checkpoint_stress_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_diskfull_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_recover_stress_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_recover_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_recovery_fileops_unit_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 test $# -ge 2

src/tests/run_stress_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ $# -lt 3 ]]; then exit 1; fi
 

src/tests/run_test1426.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_test3039.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

src/tests/run_test_thread_stack.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ $# -ne 1 ]]; then exit 1; fi
 

src/tests/run_upgrade_stress_test.sh

-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ $# -lt 5 ]]; then exit 1; fi