widl: Try to append .tlb extension to importib file name if it can't be found without it.

[Jacek Caban]

On 16.06.2017 14:09, Alexandre Julliard wrote:
> Jacek Caban <jacek at codeweavers.com> writes:
>
>> That's for cases like importlib("oleacc.dll"). MIDL can import them from
>> system DLLs, but for widl, we currently need oleacc.dll file in include
>> directory. Since it is at least confusing to have a file named
>> oleacc.dll between includes, this patch allows providing oleacc.dll.tlb
>> file instead.
> I'm not sure what you want to do here. Do you want to put a plain
> typelib file in includes, but name it .dll.tlb? Or do you need an actual
> dll?

I was planning to use a plain typelib, just like we do for stdole2.tlb,
but name it oleacc.dll.tlb.

Jacek