[Filesystem] Fixed mirror for symlinks
fixed various typos
minor #9869 fixed various typos (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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fixed various typos

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Commits
-------

2f15ac7 fixed various typos
Merge branch '2.3' into 2.4

* 2.3:
  fixed a typo
  fixed CS for lambdas
  [Yaml] fixed some license headers
  Fixes message value for objects
  Check for hour, minute & second validity
  fixed various typos
  [Filesystem] Fixed mirror for symlinks
  [Validator] Removed duplicated test for IBAN in data provider

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
	src/Symfony/Component/Console/Application.php
	src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
	src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
	src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ContainerAwareHttpKernelTest.php