Merge branch 'tests-utmp' of https://github.com/rudimeier/util-linux

* 'tests-utmp' of https://github.com/rudimeier/util-linux:
  tests: skip some last tests if no dns support
  tests: split last into dns and nodns subtests
  tests: add utmpdump-circle test (arch independent)
  tests: provide missing test data for "last" on exotic archs
  tests: skip utmpdump tests for exotic archs
  tests: merge last/ and utmpdump/ into new utmp/ dir
  utmpdump: fix localtime() error handling