Microsoft officially documents pdb format

[Brad Anderson via Digitalmars-d]

On Friday, 30 October 2015 at 09:03:35 UTC, Jonathan M Davis 
wrote:
> On Friday, 30 October 2015 at 07:19:14 UTC, rsw0x wrote:
>> https://github.com/Microsoft/microsoft-pdb
>
> This probably relates to MS adding clang support to Visual 
> Studio.
>
> - Jonathan M Davis

Good guess. From the repo description: "Just trying to help the 
CLANG/LLVM community get onto Windows."