[make-initrd] Release make-initrd 2.21.0

[Alexey Gladkov]

New release 2.21.0 is available.

Important changes
=================

- Runtime:
  + Ignore errors if we were unable to send udevd a signal to exit.
  + Mount /proc without writing in /etc/mtab.
- Feature compress:
  + Pass --best instead of -9 to compressors.
  + Force xz to use crc32 polynomial for integrity check.
  + Add zstd and lz4 support.
- Feature gpu-drm:
  + Filter enabled and/or connected drm devices.
- Utilities:
  + initrd-put: Check shebang only in an executable file.
  + initrd-put: Fix false warnings from libelf.

Git repository
==============

https://github.com/osboot/make-initrd.git

Feedback and bug reports, as always, are welcomed.

Changelog
=========

This time the changelog is big enough to fit here. You can see the complete
log in git or by the link:

https://github.com/osboot/make-initrd/compare/2.20.1...2.21.0

-- 
Rgrds, legion