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

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>

Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>

- Reordered things in Makefile
- Removed PKG_BUILD_DIR and PKG_UNPACK as it isn't necessary
- Changed TITLE from python3-jinja2 to Jinja2
- Added src package

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

Signed-off-by: Karel Kočí <karel.koci@nic.cz>

Switch URL to a deterministic one.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

This guarantees for the package feeds that
the mk files will always be available for all packages.

Will need to see about external-feed Python packages
a bit later.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

Signed-off-by: Daniel Golle <daniel@makrotopia.org>