Update PHP compatibility info
Summary:
Updates PHP compatibility info with php_compatinfo version 4.5.1.
NOTE: I had to apply D14523 in order to run the ./scripts/update_compat_info.php script.
Test Plan: N/A
Reviewers: epriestley, Blessed Reviewers
Reviewed By: epriestley, Blessed Reviewers
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14520