Clean up tools/build_inspector.sh.

Formatting and license block.

Change-Id: Iac5aa410136feb94901a9f2af5bdcc4188959e41

tools/build_inspector.sh

-if ! [ -x "$(command -v emcc)" ] || ! [ -x "$(command -v emconfigure)" ] || ! [ -x "$(command -v emmake)" ]; then
-  echo 'Emscripten SDK is not available (emcc, emconfigure or emmake is missing). Install it from https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html and try again.' >&2
+#!/bin/sh
+##
+## Copyright (c) 2017, Alliance for Open Media. All rights reserved
+##
+## This source code is subject to the terms of the BSD 2 Clause License and
+## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+## was not distributed with this source code in the LICENSE file, you can
+## obtain it at www.aomedia.org/license/software. If the Alliance for Open
+## Media Patent License 1.0 was not distributed with this source code in the
+## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+##
+
+if ! [ -x "$(command -v emcc)" ] \
+    || ! [ -x "$(command -v emconfigure)" ] \
+    || ! [ -x "$(command -v emmake)" ]; then
+  cat << EOF >& 2
+Emscripten SDK is not available (emcc, emconfigure or emmake is missing).
+Install it from
+https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html
+and try again.
+EOF
   exit 1
 fi
 
 echo 'Building JS Inspector'
 if [ ! -d ".inspect" ]; then
   mkdir .inspect
-  cd .inspect && emconfigure ../../configure --disable-multithread --disable-runtime-cpu-detect --target=generic-gnu --enable-accounting --disable-docs --disable-unit-tests --enable-inspection --enable-highbitdepth --extra-cflags="-D_POSIX_SOURCE"
+  cd .inspect && emconfigure ../../configure \
+    --disable-multithread \
+    --disable-runtime-cpu-detect \
+    --target=generic-gnu \
+    --enable-accounting \
+    --disable-docs \
+    --disable-unit-tests \
+    --enable-inspection \
+    --enable-highbitdepth \
+    --extra-cflags="-D_POSIX_SOURCE"
+  cd ..
 fi
 
 cd .inspect
 emmake make -j 8
 cp examples/inspect inspect.bc
-emcc -O3 inspect.bc -o inspect.js -s TOTAL_MEMORY=134217728 -s MODULARIZE=1 -s EXPORT_NAME="'DecoderModule'" --post-js "../inspect-post.js" --memory-init-file 0
+emcc -O3 inspect.bc -o inspect.js \
+  -s TOTAL_MEMORY=134217728 \
+  -s MODULARIZE=1 \
+  -s EXPORT_NAME="'DecoderModule'" \
+  --post-js "../inspect-post.js" \
+  --memory-init-file 0
 cp inspect.js ../inspect.js