[CS Fix] Consistent coding-style of concatenation operator usage
Fix Process timeout
Round stream_select fifth argument up.

- This argument must be an integer
- An argument equal to 0 should be avoided as it consumes too much CPU time
fixed CS
Fix timeout in Process::stop method

 - The timeout is ten times more than set.
 - The timeout does not occurs, it is actually blocking until the process dies.
merged branch romainneutron/process-timeout (PR #7580)

This PR was merged into the 2.1 branch.

Discussion
----------

[2.1][Process] Fix timeout in Process::stop method

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7579
| License       | MIT

- The timeout is ten times more than set.
- The timeout does not occurs, it is actually blocking until the process dies.

Commits
-------

bec8ff1 Fix timeout in Process::stop method
Merge branch '2.1' into 2.2

* 2.1:
  [HttpKernel] tweaked previous merge
  #7531: [HttpKernel][Config] FileLocator adds NULL as global resource path
  Fix autocompletion of command names when namespaces conflict
  Fix timeout in Process::stop method
  fixed CS
  Round stream_select fifth argument up.
  Fix Process timeout

Conflicts:
	src/Symfony/Component/Process/Process.php
	src/Symfony/Component/Process/ProcessBuilder.php
Merge branch '2.2'

* 2.2:
  Fix finding ACLs from ObjectIdentity's with different types
  [HttpKernel] tweaked previous merge
  #7531: [HttpKernel][Config] FileLocator adds NULL as global resource path
  Fix autocompletion of command names when namespaces conflict
  Fix timeout in Process::stop method
  fixed CS
  Round stream_select fifth argument up.
  Fix Process timeout
  [HttpKernel] Remove args from 5.3 stack traces to avoid filling log files, fixes #7259
  bumped Symfony version to 2.2.2-DEV
  updated VERSION for 2.2.1
  updated CHANGELOG for 2.2.1
  Fixed phpdoc blocks to show that $uri can be passed as a string or ControllerReference (rather than just as a string)
  [HttpFoundation] Fixed copy pasted comment from FlashBag in AttributeBag
  [FrameworkBundle] fixed the discovery of the PHPUnit configuration file when using aggregate options like in -vc app/ (closes #7562)
  [WebProfilerBundle] removed next pointer class in a template
  fix overwriting of request's locale if attribute _locale is missing

Conflicts:
	src/Symfony/Component/HttpKernel/Debug/ErrorHandler.php
	src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php
	src/Symfony/Component/HttpKernel/Kernel.php