Avoiding hard-coded bash path

Changed '#!/bin/bash' to '#!/usr/bin/env bash'.
There do not exist bash in most Unix system, like bsd family.

configure

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ## Set up python-related environment settings
 while true; do

tensorflow/tools/ci_build/ci_parameterized_build.sh

@@ -306,7 +306,7 @@ if [[ "${DO_DOCKER}" == "1" ]]; then
 fi
 
 # Write to the tmp script
-echo "#!/bin/bash" > ${TMP_SCRIPT}
+echo "#!/usr/bin/env bash" > ${TMP_SCRIPT}
 if [[ ! -z "${TF_BUILD_BAZEL_CLEAN}" ]] &&
    [[ "${TF_BUILD_BAZEL_CLEAN}" != "0" ]]; then
   echo ${BAZEL_CLEAN_CMD} >> ${TMP_SCRIPT}

tensorflow/tools/docker/docker_run_gpu.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tensorflow/tools/docker/run_jupyter.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tensorflow/tools/docs/gen_docs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tensorflow/tools/docs/gen_docs_test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -eux
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,6 +14,8 @@
 # limitations under the License.
 # ==============================================================================
 
+set -eux
+
 TFDIR=$TEST_SRCDIR/tensorflow
 DOXYGEN=doxygen
 DOXYGEN_CONFIG="tf-doxy_for_md-config"

tensorflow/tools/pip_package/build_pip_package.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tensorflow/tools/swig/swig.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

third_party/gpus/cuda/cuda_config.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

util/python/python_config.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");