Merge branch 'uli42-pr/various10' into 3.6.x #199

Job	Run time
Build on ubuntu:16.04 - gcc	5m 40s
Build on ubuntu:16.04 - clang	6m 5s
Build on ubuntu:20.04 - gcc	7m 26s
Build on ubuntu:20.04 - clang	7m 38s
Build on ubuntu:22.04 - gcc	7m 2s
Build on ubuntu:22.04 - clang	7m 13s
Build on debian:stable - gcc	7m 41s
Build on debian:stable - clang	7m 44s
Build on debian:sid - gcc	7m 3s
Build on debian:sid - clang	7m 46s
Build on quay.io/centos/centos:7 - gcc	6m 1s
Build on quay.io/centos/centos:7 - clang	5m 32s
Build on quay.io/centos/centos:stream9 - gcc	7m 45s
Build on quay.io/centos/centos:stream9 - clang	8m 7s
Build on fedora:latest - gcc	9m 13s
Build on fedora:latest - clang	8m 15s
	1h 56m 11s

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