systemd 190

1. edb9aaa main: replace --running-as= by --session and --system do mimic related tools and D-Bus by Lennart Poettering · 15 years ago
2. 18c78fb typo: the correct spelling is maintenance not maintainance by Lennart Poettering · 15 years ago
3. 1486dbe docs: update DISTRO_PORTING a little by Lennart Poettering · 15 years ago
4. eb10a76 docs: add terse distribution porting guide by Lennart Poettering · 15 years ago