[PATCH] Better handling for deprecated functions (implements #66861)

Hello, some of you probably remember this feature request https://bugs.php.net/bug.php?id=66861 I created working, but not-so-well-tested implementation of this mockup: http://i.imgur.com/EH1d9ew.png Pull requests are ready for review (they are complementary), all details inside: - https://github.com/php/web-php/pull/63 - https://github.com/php/phd/pull/12 I would be very glad for code review and testing in at least one more environment. Have a good day, Maciej. PS: Hannes, Adam and Yasuo, I've CC'ed you because of your interest in this feature.