Version and requirements for APC support

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@329695 c90b9560-bf6c-de11-be94-00142212c4b1
1.2.0-alpha (planned) release date

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@329696 c90b9560-bf6c-de11-be94-00142212c4b1