Test unary ~ operator for ints and longs (failing)

The unary operator ~ should also be supported for longs:

```
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Python 2.6(ish) (skulpt, Wed Jun 11 2014 01:50:19 GMT+0200 (CEST))
[v8: 3.19.18.18] on a system
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>>> ~1L
TypeError: bad operand type for unary ~: 'long' on line 1
1>: evaluationresult = ~1L
2 : if not evaluationresult == None: print evaluationresult
>>> 
```