[PATCH] Allow building GCC with PTX offloading even without CUDA being installed (gcc and nvptx-tools patches)

[Alexander Monakov]

Hello Jakub,

Sorry for not noticing this earlier, but ...

> +#ifdef __LP64__
> +typedef unsigned long long CUdeviceptr;
> +#else
> +typedef unsigned CUdeviceptr;
> +#endif

I think this #ifdef doesn't do the right thing on MinGW.
Would it be fine to simplify it?  In my code I have

  typedef uintptr_t CUdeviceptr;

Thanks.
Alexander