Constants::getPassByReferenceFunctions(): contains methods

[jrfnl]

The array in Constants::getPassByReferenceFunctions() includes a number of methods, but no indication that:

1. These are methods and should only be recognized as the function when called as a method.
2. What class these methods come from.

This means that, for example, if someone would currently define a global function addTask() which doesn't use pass by reference, the sniff may have a false negative as parameter 3 would not be checked.

The same goes, of course, for userland classes defining a function of the same name as one of these, as well as namespaced functions.