v3.5 Java Runtime CommonTreeNodeStream's push and pop methods are fragile

`CommonTreeNodeStream`'s super class `FastQueue`'s `data` and `p` fields may be clear by the `remove` method. So the example [Simple Tree-based Interpreter](http://www.antlr.org/wiki/display/ANTLR3/Simple+tree-based+interpeter) doesn't work as it expected.

Start by reproducing the Simple Tree-based Interpreter example linked in the issue. Read CommonTreeNodeStream and its FastQueue superclass, focusing on push, pop, and remove and how data and p are handled. Done means the example behaves as expected after queue removal operations.

Written by the indexing model from the issue text.