[PATCH 2 of 8] py3: add os.fsdecode() as pycompat.fsdecode()

[Yuya Nishihara]

On Sun, 06 Nov 2016 04:46:19 +0530, Pulkit Goyal wrote:
> # HG changeset patch
> # User Pulkit Goyal <7895pulkit at gmail.com>
> # Date 1478382160 -19800
> #      Sun Nov 06 03:12:40 2016 +0530
> # Node ID 972b0c0175fc402ffe8beac276b737b32ce0df0b
> # Parent  2d456de3a41ab961da8ae71dfefccdc9d7febe78
> py3: add os.fsdecode() as pycompat.fsdecode()
> 
> We need to use os.fsdecode() but this was not present in Python 2. So added
> the function in pycompat.py

Queued 1, 2 and 5 as 2 and 1+5, thanks. We can't split 1 and 5 since they
depend on each other.