RFC: Move phpng to master

All, As we’re getting closer to release 5.6.0, and given the very high level of interest in phpng, I think it’s time for us to provide some clarity regarding what happens post 5.6.0. Dmitry and I wrote an RFC proposing that we merge phpng into master and turn it into the basis of the next major version of PHP (name TBD). The RFC is available at https://wiki.php.net/rfc/phpng Some supporting links available down below. Comments welcome! Zeev Performance evaluation & evolution of phpng: https://wiki.php.net/phpng#performance_evaluation phpng internals: https://wiki.php.net/phpng-int Benchmarking PHPNG (benchmark results of phpng vs 5.4, 5.5, 5.6 and hhvm): http://zsuraski.blogspot.co.il/2014/07/benchmarking-phpng.html