Fix #669: remove app/SymfonyRequirements.php and app/check.php in case of new directory structure
bug #147 Fix SensioDistributionBundle#669: remove app/SymfonyRequirements.php and app/check.php in case of new directory structure (romainneutron)

This PR was merged into the 3.0.x-dev branch.

Discussion
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Fix SensioDistributionBundle#669: remove app/SymfonyRequirements.php and app/check.php in case of new directory structure

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | https://github.com/symfony/symfony-standard/issues/669, #141
| License       | MIT

Commits
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b030147 Fix #669: remove app/SymfonyRequirements.php and app/check.php in case of new directory structure