[PATCH stable] diff: use binary diff when copy source is binary

[Matt Mackall]

On Sun, 2015-01-18 at 22:16 -0800, Martin von Zweigbergk wrote:
> # HG changeset patch
> # User Martin von Zweigbergk <martinvonz at google.com>
> # Date 1421535821 28800
> #      Sat Jan 17 15:03:41 2015 -0800
> # Node ID 7e444c8e80c1dbee2c145ff7022547ac10d7a56e
> # Parent  049a9e3a078d7c988cb12ed456aad6ec2779ea69
> diff: use binary diff when copy source is binary

Queued for stable, thanks.

-- 
Mathematics is the supreme nostalgia of our time.