[FrameworkBundle] fixed path replacement on Windows

In the cache, blackslashes in paths can be both represented by a single
or a double backslash.
remove MinCount and MaxCount contraints. It has been replaced by Count constraints.
bug #9192 [2.2][Form] remove MinCount and MaxCount constraints in ValidatorTypeGuesser (franek)

This PR was merged into the 2.2 branch.

Discussion
----------

[2.2][Form] remove MinCount and MaxCount constraints in ValidatorTypeGuesser

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

MinCount and MaxCount has been removed and replaced by Count (in 2.2 also).

Commits
-------

58a3296 remove MinCount and MaxCount contraints. It has been replaced by Count constraints.
Merge branch '2.2' into 2.3

* 2.2:
  remove MinCount and MaxCount contraints. It has been replaced by Count constraints.
[FrameworkBundle] updated XML route description
bug #9184 Fixed cache warmup of paths which contain back-slashes (fabpot)

This PR was merged into the 2.2 branch.

Discussion
----------

Fixed cache warmup of paths which contain back-slashes

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #8781
| License       | MIT
| Doc PR        | n/a

From #8781

"
At this step in the warmup process there is a string replacement made, but paths with backslashes
are written into the cache file as something like `C:\\path\\to\\cache/pro_/...` but the str_replace
searches for the plain string `C:\path\to\cache/pro_/...`, which produces no matches.

The fix solves this by using var_export to escape the search (and replace) paths so they match the
format originally output into the cache file.
"

Commits
-------

526d285 [FrameworkBundle] fixed path replacement on Windows
[FrameworkBundle] fixed container:debug and router:debug commands
[FrameworkBundle] changed the router:debug to use the shortcut notation for the controller
[FrameworkBundle] changed JSON descriptors to be more readable on PHP 5.4+
[FrameworkBundle] moved router:debug and container:debug to use the compact layout
bug #9195 [WIP] [FrameworkBundle] fixed container:debug and router:debug commands (fabpot)

This PR was merged into the master branch.

Discussion
----------

[WIP] [FrameworkBundle] fixed container:debug and router:debug commands

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

#7887 is buggy as hell :(

Commits
-------

fe5961a [FrameworkBundle] moved router:debug and container:debug to use the compact layout
bd16157 [FrameworkBundle] changed JSON descriptors to be more readable on PHP 5.4+
1d210f8 [FrameworkBundle] changed the router:debug to use the shortcut notation for the controller
d997dfa [FrameworkBundle] fixed container:debug and router:debug commands
bug #9197 [FrameworkBundle] updated XML route description (jfsimon)

This PR was merged into the master branch.

Discussion
----------

[FrameworkBundle] updated XML route description

This PR turns

```xml
<route name="route_1" path="/hello/{name}" class="Symfony\Component\Routing\Route" path_regex="#^/hello(?:/(?P&lt;name&gt;[a-z]+))?$#s">
```

into

```xml
<route name="route_1" class="Symfony\Component\Routing\Route">
    <path regex="#^/hello(?:/(?P&lt;name&gt;[a-z]+))?$#s">/hello/{name}</path>
```

in XML routing description.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | yes
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7887
| License       | MIT
| Doc PR        | n/a

Commits
-------

7b99ede [FrameworkBundle] updated XML route description
[ExpressionLanguage] replaced the =~ operator by matches (removed the != operator)
minor #9201 [ExpressionLanguage] replaced the =~ operator by matches (removed the != operator) (fabpot)

This PR was merged into the master branch.

Discussion
----------

[ExpressionLanguage] replaced the =~ operator by matches (removed the != operator)

| 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

To be consistent with fabpot/Twig#1209

Commits
-------

4c2d2e2 [ExpressionLanguage] replaced the =~ operator by matches (removed the != operator)
removed obsolete code
[Form] Add a 'submitted' attribute to the form view
feature #9208 [Form] Add a 'submitted' attribute to the form view (egeloen)

This PR was merged into the master branch.

Discussion
----------

[Form] Add a 'submitted' attribute to the form view

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | symfony/symfony-docs#3029

Basically, the use case of this PR is to determine in the view if a form has been validated by the validator. By default, the valid attribute is true and we can't know if the form has been submitted. Now, we can use `form.vars.submitted && form.vars.valid`.

Commits
-------

a386c74 [Form] Add a 'submitted' attribute to the form view
Check for lock existence before unlinking

My logs are filled with a bazillion errors stating "Warning: unlink(/var/www/mysite/app/cache/prod/http_cache/md/cf/47/c693da5dab3eccb65fa36a9b4b07ad0f7cc4.lck): No such file or directory in /var/www/mysite/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpCache/Store.php line 53"
bug #9207 [HttpKernel] Check for lock existence before unlinking (ollietb)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #9207).

Discussion
----------

[HttpKernel] Check for lock existence before unlinking

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

My logs are filled with a bazillion errors stating "Warning: unlink(/var/www/mysite/app/cache/prod/http_cache/md/cf/47/c693da5dab3eccb65fa36a9b4b07ad0f7cc4.lck): No such file or directory in /var/www/mysite/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpCache/Store.php line 53"

Commits
-------

89cd3b9 Check for lock existence before unlinking
fixed CS