Fixes T8674. Currently, ArcanistSelfMemberReferenceXHPASTLinterRule warns if a fully-qualified class name is used in place of self. This is fine in most cases, but in some specific scenarios fails for PHP 5.3 because self (and also $this) cannot be used in an anonymous closure (see anonymous functions and [[https://wiki.php.net/rfc/closures/removal-of-this | removal of $this in closures]]).
In order to do this, I also had to modify the manner in which configuration was passed to individual linter rule. Previously, it was only possible or an individual linter rule to be set with a configuration value. Once the linter rule had set this value, there was no means by which to allow this value to be shared amongst linter rules.
Depends on D13819.