[PATCH v2] log: speed up single file log with hidden revs (issue4747)

[Yuya Nishihara]

On Mon, 25 Jan 2016 15:47:37 -0600, Matt Mackall wrote:
> # HG changeset patch
> # User Matt Mackall <mpm at selenic.com>
> # Date 1453486100 21600
> #      Fri Jan 22 12:08:20 2016 -0600
> # Branch stable
> # Node ID b1e549166f2d1e8e5395638e97a0fcac9bed2fef
> # Parent  f62dea3f36975b3daac82e9dcd0ec964cf30c2a7
> log: speed up single file log with hidden revs (issue4747)

Looks good to me. Pushed to the clowncopter, thanks.