[Process] Warn user with a useful message when tmpfile() failed
Merge branch '2.1' into 2.2

* 2.1:
  [FrameworkBundle] tweaked reference dumper command (see #7093)
  [HttpKernel] added some tests for previous merge
  Fix REMOTE_ADDR for cached subrequests
  [Process] Warn user with a useful message when tmpfile() failed

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Command/ConfigDumpReferenceCommand.php
[Process] Fix regression introduced in #6620 / 880da01c49a9255f5022ab7e18bca38c18f56370, fixes #7082
Merge branch '2.0' into 2.1

* 2.0:
  [Process] Fix regression introduced in #6620 / 880da01c49a9255f5022ab7e18bca38c18f56370, fixes #7082
Merge branch '2.1' into 2.2

* 2.1:
  [Process] Fix regression introduced in #6620 / 880da01c49a9255f5022ab7e18bca38c18f56370, fixes #7082
Merge branch '2.2'

* 2.2: (22 commits)
  [Process] Fix regression introduced in #6620 / 880da01c49a9255f5022ab7e18bca38c18f56370, fixes #7082
  [HttpKernel] added a unit for the previous commit (closes #7025)
  [HttpFoundation] fixed, overwritten CONTENT_TYPE
  [BrowserKit] fixed test added in the previous merge (refs #7059)
  [FrameworkBundle] tweaked reference dumper command (see #7093)
  Remove unnecessary comment and change test name
  [Config] tweaked dumper to indent multi-line info
  [HttpKernel] added some tests for previous merge
  Fix REMOTE_ADDR for cached subrequests
  [FrameworkBundle] CSRF should be on by default
  [WebProfilerBundle] removed dependency on FrameworkBundle (closes #6949)
  [HttpKernel] added error display suppression when using the ErrorHandler (if not, errors are displayed twice, refs #6254)
  [HttpFoundation] tweaked previous merge
  [HttpFoundation] Added getter for httpMethodParameterOverride state
  Create validators.lv.xlf
  [Process] Warn user with a useful message when tmpfile() failed
  [BrowserKit] added a test to make sure HTTP authentication is preserved when submitting a form
  Remove array type hint from GetResponseForControllerResultEvent::setControllerResult()
  bumped Symfony version to 2.2.0-DEV
  Revert "merged branch povilas/issue_6101 (PR #6708)"
  ...