oledb32: Add IDataSourceLocator support (try 4)

[Nikolay Sivov]

On 8/21/2013 09:15, Alistair Leslie-Hughes wrote:
> Hi,
> Use helper functions for memory
>
>
> Changelog:
>        oledb32: Add IDataSourceLocator support
>
>
> Best Regards
>     Alistair Leslie-Hughes
It looks okay, but I suggest to fix a naming:

> +typedef struct DataSourceImpl
> +{
> +    IDataSourceLocator     IDataSourceLocator_iface;
> +    LONG ref;
> +
> +} DataSourceImpl;
> +static HRESULT WINAPI datasource_QueryInterface(IDataSourceLocator *iface, REFIID riid, void **ppvoid)
etc.

IDataSource is another interface, and it's confusing to name locator 
after it - dslocator_* naming used in CF is
short enough and descriptive to use it everywhere.