Avoid question mark and asterisk in folder names to prevent windows filesystem issues.

A previous commit introduced a folder with a question mark and an asterisk which are invalid NTFS folder name characters and prevented checkout on those systems.
Merge branch '2.3' into 2.4

* 2.3:
  typo fixed in AbstractProcessTest (getoutput() => getOutput())
  Avoid question mark and asterisk in folder names to prevent windows filesystem issues.
  [Translation] [Config] Clear libxml errors after parsing XML file

Conflicts:
	src/Symfony/Component/Config/Util/XmlUtils.php
Merge branch '2.4' into 2.5

* 2.4:
  typo fixed in AbstractProcessTest (getoutput() => getOutput())
  Avoid question mark and asterisk in folder names to prevent windows filesystem issues.
  [Translation] [Config] Clear libxml errors after parsing XML file
Merge branch '2.5'

* 2.5:
  typo fixed in AbstractProcessTest (getoutput() => getOutput())
  Avoid question mark and asterisk in folder names to prevent windows filesystem issues.
  [Translation] [Config] Clear libxml errors after parsing XML file
  check for the Validator if forms are enabled
  Clear json_last_error
  Fix JsonSerializable namespace
  Catch exceptions to restore the error handler
  [HttpFoundation] Silent only JSON errors