Log message:
all: migrate some SourceForge homepage URLs back from https to http

https://mail-index.netbsd.org/pkgsrc-ch … 05146.html

In the above commit, the homepage URLs were migrated from http to https,
assuming that SourceForge would use the same host names for both http and
https connections. This assumption was wrong. Their documentation at
https://sourceforge.net/p/forge/documen … %20VHOSTs/ states
that the https URLs use the domain sourceforge.io instead.

To make the homepages from the above commit reachable again, pkglint has
been extended to check for reachable homepages. This check is only
enabled when the --network command line option is given.

Each of the homepages that referred to https://$project.sourceforge.net
before was migrated to https://$project.sourceforge.io (27), and if that
was not reachable, to the fallback URL http://$project.sourceforge.net
(163).

Log message:
all: migrate several HOMEPAGEs to https

pkglint --only "https instead of http" -r -F

With manual adjustments afterwards since pkglint 19.4.4 fixed a few
indentations in unrelated lines.

This mainly affects projects hosted at SourceForce, as well as
freedesktop.org, CTAN and GNU.

Log message:
Changed PYTHON_VERSIONS_INCOMPATIBLE to PYTHON_VERSIONS_ACCEPTED; needed for \ 
future Python 3.8

Log message:
fix some whitespace, mostly introduced in the previous
python 3.4 / 3.5 removal commit.

Log message:
Omit mentions of python 34 and 35, after those were removed.

- Includes some whitespace changes, to be handled in a separate commit.

Log message:
*: reset maintainer

Log message:
extend PYTHON_VERSIONS_ for Python 3.7

Log message:
Add python-3.6 to incompatible versions.