Add an ID to allow php://input to be directly linked.

This may be important shortly. :)


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332635 c90b9560-bf6c-de11-be94-00142212c4b1
Fix link from the 5.5 migration guide to the 5.4 one.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332636 c90b9560-bf6c-de11-be94-00142212c4b1