Intermittent errors (due to broker network connectivity, key server
failure, whatever ...) could result in an incomplete keyring. So exit
immediately on error.

We need the key and most recent self signature.

Signed-off-by: Christian Hesse <mail@eworm.de>

There's no need to have images in pacman keyring...

Signed-off-by: Christian Hesse <mail@eworm.de>

- add keys of new Trusted Users: zorin, shibumi, archangegabriel
- revoke keys of ex-TUs: flexiondotorg, dicebot
- revoke Dan's master key

Signed-off-by: Bartłomiej Piotrowski <bpiotrowski@archlinux.org>

Use the file packager-revoked-keyids to revoke certain keys.

This reverts commit 9f3a1ace.

Keep signatures until pacman 4.0.3 hits [core].

We also remove unused signatures from the keys to keep the history more readable

The update script creates key files for master keys and all developers with fully trusted keys.

* The keyid lists are retreived from archweb
* The update script can be run to refresh all keys