[PATCH 1 of 4] py3: use pycompat.byteskwargs() to convert opts to bytes

[Yuya Nishihara]

On Fri, 07 Apr 2017 16:29:37 +0530, Pulkit Goyal wrote:
> # HG changeset patch
> # User Pulkit Goyal <7895pulkit at gmail.com>
> # Date 1491552933 -19800
> #      Fri Apr 07 13:45:33 2017 +0530
> # Node ID 6b32872e4896993efe0abcc13b6d9c4c9b8687b7
> # Parent  f6d77af84ef3e936b15634759df2718d5363b78a
> py3: use pycompat.byteskwargs() to convert opts to bytes

Queued this, thanks.