Followup to 2b0bff7e.

util-linux 2.38 added a --mkdir option to mount that creates the mountpoint if it does not exist.

README.rst:
Add nl6720 with PGP key ID BB8E6F1B81CF0BB301D74D1CBF425A01E68B38EF as additional project maintainer.

This should provide KSM for VirtualBox, VMware and QEMU.

* Add '/drivers/char/agp/' and '/drivers/gpu/drm/' instead of hardcoding the module names.
* Add modules using add_checked_modules to allow filtering it with the autodetect hook. This allows to use the hook outside of just archiso.

CHANGELOG.rst:
Add changelog entry for 61.

CONTRIBUTING.rst:
Add infos around how to use the changelog when providing changes and how merge requests are handled by the maintainers
of the project.

Now that EROFS is detected by util-linux, the actions to mount a squashfs or erofs image are basically the same. The _mnt_sfs and _mnt_erofs functions can be merged into one: _mnt_fs.

If neither airootfs.sfs nor airootfs.erofs are found, error out to interactive shell.

Change default DHCP timeout to 60 seconds instead of 20 to avoid STP issues.

See merge request mkinitcpio/mkinitcpio-archiso!13

Change default DHCP timeout to 60 seconds instead of 30 to avoid issues with STP (Spanning Tree Protocol). STP defaults to 15 + 15 seconds on a lot of popular devices for listening and learning states. Which if not disabled (which you should on access switches, sure..) most netboots will fail intermittently due to the port access on switches performing port learning while the machine is trying to get DHCP leases.

Added comment referencing to why the 60 seconds.
More information can be found here: https://www.ciscopress.com/articles/article.asp?p=2832407&seqNum=6 and
 https://techhub.hpe.com/eginfolib/networking/docs/switches/5980/5200-3921_l2-lan_cg/content/499036677.htm

* 9-cowspace-can-no-longer-be-on-same-device-as-archiso-files:
  hooks/archiso: mount cow_device read-only at first and remount it read-write right after

Closes #9

See merge request mkinitcpio/mkinitcpio-archiso!12

This prevents errors when the device is already mounted read-only somewhere else (e.g. if cow_device and archisodevice are the same).

Partially reverts d0d7eb25
Fixes #9.

* version/60:
  Add changelog entry for v60
  Add dummy changelog entry

CHANGELOG.rst:
Add a changelog entry for v60.

CHANGELOG.rst:
Add a dummy changelog entry that is used for unreleased changes.

* rm-archiso_shutdown:
  hooks/archiso{,_loop_mnt}: remove /run/archiso/used_block_devices
  Remove obsolete archiso_shutdown hook

Now that the archiso_shutdown is removed, nothing uses this file anymore and it is not needed.

Additionally, cowspace is mounted read-write on first mount, not mounted read-only and then remounted read-write.

The functionality it provides has been available in mkinitcpio itself since 2013.
https://lists.archlinux.org/pipermail/arch-dev-public/2013-December/025742.html

Implements #8.

* remove-mnt_dev-fstype:
  hooks/archiso: remove unneeded file system type from _mnt_dev

It was only used because util-linux did not support detecting EROFS and the mount command required `-t erofs` to mount EROFS.
util-linux 2.37 supports detecting EROFS; see https://github.com/util-linux/util-linux/commit/7b2a874e2ee306e9503210f8aa5eed7f53c06755.
Now that the workaround is not needed anymore, it can be removed.

* origin/changelog/59:
  Add changelog for v59

CHANGELOG.rst:
Add a changelog entry for v59.

* nl6720/gpg-verify-verbose:
  hooks/archiso: show GPG "GOODSIG" line when verifying the signature

* nl6720/mailmap:
  Add .mailmap file

Use .mailmap to fix author names and emails in git log / git shortlog -e.

Related to archlinux/archiso#103 and archlinux/archiso!208.

* changelog/58:
  Add changelog for 58

CHANGELOG.rst:
Add changelog entry for v58.

* issues/4:
  Add shfmt to check target
  Fix formatting with shfmt

Makefile:
Add the shfmt target to the check target.

{hooks,install,script}/*:
Fix formatting in all scripts using shfmt.
Replace a few echo calls with printf.

* issues/2:
  README.rst: Add initial README
  AUTHORS.rst: Truncate list of authors
  editorconfig: Remove project specific data
  CONTRIBUTING.rst: Adapt to new project name

README.rst:
Add initial README document with information on purpose, requirements, installation instructions, documentation,
releases, contributing guidelines and license.

AUTHORS.rst:
Rename the authors list and truncate it to match the current list of contributors.

.editorconfig:
Remove project specific comment and the SPDX license identifier, as the configuration is not eligible for copyright.