shdocvw: Added get_LocationURL implementation.

[Jacek Caban]

Robert Shearman wrote:
>
> BSTR and LPWSTR are not interchangable. A lot of the time you can get
> away with it, but if anything tries to access the length that prefixes
> a BSTR on the LPWSTR then bad things will happen.
>
Right, thanks. I don't know, why I have changed it. I think I passed
BSTR in one of modifications in my tree. I'll send a fixed version.


Thanks,
    Jacek