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

[Yuya Nishihara]

On Sun, 6 Nov 2016 04:57:40 -0500, timeless wrote:
> Pulkit Goyal wrote:
> > +    # In Python 2, fsdecode() have a very chances to recieve bytes. So it's
> 
> receive

Fixed as:

    # In Python 2, fsdecode() has a very chance to receive bytes. So it's
    # better not to touch Python 2 part as it's already working fine.