bugix: CookieJar returns cookies with domain "domain.com" for domain "foodomain.com"
merged branch povilas/cookiejar-bugfix (PR #9125)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #9125).

Discussion
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[BrowserKit] bugix: CookieJar returns cookies with domain "domain.com" f...

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

Fixes this bug:
```php
$cookieJar = new CookieJar();
$cookieJar->set(new Cookie('foo', 'bar', null, '/', '.example.com'));

print_r($cookieJar->allValues('http://wwwexample.com'));
// expected result: array()
// actual result: array('foo' => 'bar')
```

Commits
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060b28e [BrowserKit] bugix: CookieJar returns cookies with domain "domain.com" for domain "foodomain.com"