Bug 650161 - Add an assertion that something is only ever called from a GC callback r=terrence
Bug 650161 - Use the object moved hook to update the wrapper cache r=terrence r=bz r=bholley
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Add exception for objectMoved hook as we do for finalize hook
Bug 650161 - Fix shell test failures caused by compacting GC r=terrence
Bug 650161 - Update the gc() shell builtin to allow triggering of shrinking GC r=terrence