* tests/php/scheck/variables.php: new test or $self::CST typo
* tests/php/parsing/assign_associativity.php: fix
* data/php_stdlib/builtins_math.idl.php:
* lang_php/pretty/Makefile: use -custom
spatch: fix pretty printer on default without a body

Summary: alex found this bug.

Test Plan: make test

Reviewers: julienv, pieter

Reviewed By: pieter

CC: arice

Differential Revision: https://phabricator.fb.com/D823647

Task ID: 2380059