- Explicitely provide 'group(systemd-journal)' from the main package (bsc#1217852)

- Import commit ce08cd5f66e1a661c2b9ed764ad7036decd76503
ce08cd5f66 man/standard-conf: directory paths should end with '/'
8324cbfde7 config files: update their header to reflect that they can be installed in /usr
bc36846ad2 Reflect the fact that main config files can be installed in /usr
e304a11f33 config files: more recommendations of `systemd-analyze cat-config`
c45cecf279 meson: add build option for install path of main config files
cc61b052c6 vconsole-setup: use a consistent log level when setfont fails with EX_OSERR (bsc#1212970)
4fe3653dab tmpfiles: ignore EINVAL with --graceful (bsc#1216628)