* 2.3:
[travis] Disable hirak/prestissimo for deps=low/high tests
[HttpFoundation] fix phpdoc of UploadedFile
[ci] Skip dns-sensitive tests when DnsMock is not found
Optimize ReplaceAliasByActualDefinitionPass
[Process] use __METHOD__ where applicable
Conflicts:
.travis.yml
src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
src/Symfony/Component/Process/Process.php
src/Symfony/Component/Process/ProcessBuilder.php