Improve support of standard operators

```
Expand support, e.g. op_IntegerAddressOf. see 
http://research.microsoft.com/en-us/um/cambridge/projects/fsharp/manual/spec.htm
l#_Toc270597399 for full list (MSDN is incomplete or wrong). Note that this is 
different than Issue 1.
```

Original issue reported on code.google.com by `stephen....@gmail.com` on 23 Apr 2012 at 1:59
