Log message:
url2pkg: clean up package Makefile

Start each shell command in a new line. This makes it easier to find the
'for' that corresponds to the 'done', especially since the 'done' could
also be started by a 'while' or an 'until'.

No functional change.

Log message:
url2pkg: disable resuming transfers when fetching distfiles

Resuming the transfer only works if there already is a distinfo file, as
otherwise the correct size of the file is not known.

This prevents these warnings from mk/fetch/fetch:
> fetch: ``-r'' requires ``-f distinfo''.
> fetch: Falling back to non-resume fetch.

Log message:
url2pkg: split support files for Python distutils and setuptools

When url2pkg determines the metadata of a Python module, it had merged
the two implementations for Python's distutils and setuptools, which
made the code hard to understand.  Split them again.

Extend the support for setuptools, so that url2pkg correctly handles
wip/pytorch; it still fails because pytorch does some Git stuff from
inside setup.py, but that may be fixed later.

Bump version to 22.2.0.

Log message:
*: Revbump packages that use Python at runtime without a PKGNAME prefix

Log message:
*: recursive bump for perl 5.36

Log message:
url2pkg: make code for analyzing CPAN URLs simpler

No functional change.

Log message:
url2pkg: add support for metacpan.org URLs

Log message:
url2pkg: for Python packages, prefix directory name with 'py-'

Log message:
url2pkg: allow url2pkg to be run from a category directory as well

Previously, it was necessary to create the package directory, change
into it and then run url2pkg from there.  Since the name of the package
directory usually corresponds to DISTNAME without the version number,
all necessary data is readily available, so automate this.

Update version to 21.4.2.

Log message:
url2pkg: only accept a single URL as command line argument