How to allocate a channel and return a ptr?

[mratsim]

But why, `Chan[T]` already has reference semantics so you can pass it as is 
through over Chan[T]

Otherwise what you asked to do is the following (but i see no point in actually 
doing it)
    
    
    let chanPtr = createShared(Chan[int])
    chanPtr[] = newChan[int]()
    
    
    Run