Harmonize TranslationDebugCommand and TranslationUpdateCommand to
expect an optional bundle name or a directory and fall back to kernel
root dir if none of them is given.
* 2.5:
[WIP] Made help information of commands more consistent
Made help information consistent
Conflicts:
src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
src/Symfony/Component/Console/Tests/Fixtures/application_1.txt
src/Symfony/Component/Console/Tests/Fixtures/application_2.txt
src/Symfony/Component/Console/Tests/Fixtures/application_astext1.txt
src/Symfony/Component/Console/Tests/Fixtures/application_astext2.txt
src/Symfony/Component/Console/Tests/Fixtures/application_gethelp.txt
src/Symfony/Component/Console/Tests/Fixtures/application_run1.txt