RFC Vote: Make the hash extension always available

Hi After a two week period without any objections to the RFC, I have gone ahead of opening the voting polls for making the hash extension a permanent part of PHP. RFC: https://wiki.php.net/rfc/permanent_hash_ext Vote: https://wiki.php.net/rfc/permanent_hash_ext#vote This vote will run for two weeks from today (and close on 19/09-2018 around noon UTC+1). Since this change impacts a larger set of PHP itself, the vote required for this to pass is 2/3.