[PATCH 2 of 2 V2 relative-diff] patch.diff: add support for diffs relative to a subdirectory

[Matt Mackall]

On Sun, 2015-03-22 at 19:51 -0700, Siddharth Agarwal wrote:
> # HG changeset patch
> # User Siddharth Agarwal <sid0 at fb.com>
> # Date 1426624884 25200
> #      Tue Mar 17 13:41:24 2015 -0700
> # Node ID 3b461162cb2541bb4c7856ac206a8ad6ab828789
> # Parent  65f80a79101b818b3685121f7cfe3b29a8501494
> patch.diff: add support for diffs relative to a subdirectory

These are queued for default, thanks.

-- 
Mathematics is the supreme nostalgia of our time.