libvpx: Pull from upstream

source/libvpx/test/examples.sh

 #!/bin/sh
 ##
 ##  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
 ##
 ##  Use of this source code is governed by a BSD-style license
 ##  that can be found in the LICENSE file in the root of the source
 ##  tree. An additional intellectual property rights grant can be found
 ##  in the file PATENTS.  All contributing project authors may
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
 ##  This file runs all of the tests for the libvpx examples.
 ##
 . $(dirname $0)/tools_common.sh
 
 example_tests=$(ls $(dirname $0)/*.sh)
 
 # List of script names to exclude.
 exclude_list="examples vpxdec vpxenc tools_common"
 
 # Filter out the scripts in $exclude_list.
 for word in ${exclude_list}; do
   example_tests=$(filter_strings "${example_tests}" "${word}" exclude)
 done
 
 for test in ${example_tests}; do
   # Source each test script so that exporting variables can be avoided.
+  VPX_TEST_NAME="$(basename ${test%.*})"
   . "${test}"
 done