[Routing] add unit tests for Symfony\Component\Routing\RequestContext class
minor #9916 [Routing] add unit tests for Symfony\Component\Routing\RequestContext class (FlorianLB)

This PR was merged into the 2.3 branch.

Discussion
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[Routing] add unit tests for Symfony\Component\Routing\RequestContext class

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | none
| License       | MIT
| Doc PR        | none

ATM, this class don't have its own unit tests. This PR fill this gap with a full coverage.

Commits
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c4aaa38 [Routing] add unit tests for Symfony\Component\Routing\RequestContext class
Prepend Child Bundle paths before the parent
bug #9112 Prepend Child Bundle paths before the parent (trsteel88)

This PR was submitted for the 2.3-dev branch but it was merged into the 2.3 branch instead (closes #9112).

Discussion
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Prepend Child Bundle paths before the parent

This fixes #9085

Say you have AcmeDemoBundle and AppDemoBundle. AcmeDemoBundle is the parent of AppDemoBundle.

If you load templates using @AcmeDemoBundle/ControllerDir/template.html.twig it means that you cannot override the template in AppDemoBundle. The patch below prepends the AppDemoBundle Resources directory to the AcmeDemo namespace.

The namespace directories would not result in:

```
[AcmeDemo] => Array(
    [0] => [absolute-dir-here]/src/App/DemoBundle/Resources/views
    [1] => [absolute-dir-here]/app/Resources/AcmeDemoBundle/views
    [2] => [absolute-dir-here]/src/Acme/DemoBundle/Resources/views
)
```

Commits
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19fad88 Prepend Child Bundle paths before the parent
removed unneeded use statements
minor #9920 removed unneeded use statements (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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removed unneeded use statements

| Q             | A
| ------------- | ---
| License       | MIT

Commits
-------

7f9a366 removed unneeded use statements
Merge branch '2.3' into 2.4

* 2.3:
  removed unneeded use statements
  Prepend Child Bundle paths before the parent
  [Routing] add unit tests for Symfony\Component\Routing\RequestContext class

Conflicts:
	src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php
	src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
	src/Symfony/Component/Validator/ConstraintValidatorFactory.php