We don't implement this method.
Will be mostly fixed when classpath 0.08 comes out and we switch to it.
Partially implemented by switch to classpath 0.08.
However, we still need to hook the code into JMTk to run the finalizers if the user actually requests it.
Right now we throw an unimplemented error if this every actually happens.
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moved to JIRA: http://jira.codehaus.org/browse/RVM-558