This updates all Python packages that download their source from PyPi to
use pypi.mk.

This will allow future improvements/changes to pypi.mk to affect all
relevant packages.

This also makes it easier for future Python packages to start using
pypi.mk, when it's clear how it is used in existing packages.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

Change indentation in dependencies and as well in description

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

Add python3-codecs and python3-setuptools as dependencies

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>