Issue #2568595 by hussainweb, dawehner: Upgrade PHPUnit to latest 4.8.x

composer.lock

core/composer.json

vendor/bin/phpunit

vendor/bin/phpunit

vendor/composer/installed.json

vendor/phpunit/php-code-coverage/ChangeLog-2.2.md

vendor/phpunit/php-code-coverage/README.md

vendor/phpunit/php-code-coverage/src/CodeCoverage.php

vendor/phpunit/php-code-coverage/src/CodeCoverage/Filter.php

...unit/php-code-coverage/src/CodeCoverage/Report/Crap4j.php

...p-code-coverage/src/CodeCoverage/Report/HTML/Renderer.php

.../Renderer/Template/fonts/glyphicons-halflings-regular.ttf

...t/php-code-coverage/src/CodeCoverage/Report/Node/File.php

...de-coverage/tests/PHP/CodeCoverage/Report/FactoryTest.php

.../phpunit/php-code-coverage/tests/PHP/CodeCoverageTest.php

vendor/phpunit/php-code-coverage/tests/TestCase.php

...erage/tests/_files/CoverageTwoDefaultClassAnnotations.php

.../php-code-coverage/tests/_files/source_with_namespace.php

...p-code-coverage/tests/_files/source_without_namespace.php

vendor/phpunit/php-token-stream/.travis.yml