[PATCH] dlltool: Use the dll name as unique object file prefix instead of getpid()

[Nick Clifton]

Hi Martin,

> This makes the output deterministic without requiring the caller to
> pass --temp-prefix.
> 
> This also avoids potential prefix clashes, if building multiple import
> libraries that later are merged into one single import library (which
> is done for a number of umbrella libraries in mingw-w64-crt).

Patch approved and applied.

Cheers
   Nick