Reported-by: Reinhard Max <max@suse.de>
Use leapseclist instead of leapsectz and test also negative leap seconds. Add a test for leapsectz when the date command indicates right/UTC is available on the system and mktime() works as expected. Check TAI offset in the server's log.
This allows the scripts to be executed on systems that don't have bash in /bin. This fixes "make check".