Merge branch 'libblkid/align' of https://github.com/t-8ch/util-linux

* 'libblkid/align' of https://github.com/t-8ch/util-linux:
  libblkid: (probe) remove chunking from blkid_probe_get_idmag()
  libblkid: (probe) read data in chunks
  swapon: (tests) abort test on failing commands
  libblkid: reset errno before calling probefuncs
  libfdisk: reset errno before calling read()