Implement RegEnumKeyEx and RegEnumValue

```
Implement the following functions:
http://msdn.microsoft.com/en-us/library/ms724862(VS.85).aspx
http://msdn.microsoft.com/en-us/library/ms724865(VS.85).aspx
```

Original issue reported on code.google.com by `simon_al...@hotmail.com` on 12 May 2009 at 7:34
