MFC r272057,r272083,r272084,r272087,r274016:

r272057:

  Import pjdfstest from ^/vendor/pjdfstest/abf03c3a47745d4521b0e4aa141317553ca48f91

  - Remove tools/regression/pjdfstest
  - Add upgrade directions for contrib/pjdfstest
  - Add a note to UPDATING for the move (the reachover Makefiles are coming
    soon)

  Functional differences:
  - ftruncate testcases are added from upstream (github)

  Non-functional differences:
  - The copyright for the project has been updated to 2012
  - pjd's contact information has been updated

  Discussed with: -testing, jmmv, pjd
  Sponsored by: EMC / Isilon Storage Division

r272083:

  Expect ELOOP on Darwin/Linux with "O_NOFOLLOW was specified and the target is a
  symbolic link" case. Assume EMLINK on the rest of the OSes (FreeBSD, Solaris,
  etc)

  Sponsored by: EMC / Isilon Storage Division

r272084:

  Fix the executed testplan count

  Sponsored by: EMC / Isilon Storage Division

r272087:

  Increase the memory disk size in the following testcases to avoid mount
  failures, which would cause cascade failures in the rest of the test
  run:

  link/15.t, open/19.t, mkdir/11.t, mkfifo/11.t, symlink/11.t

  Fail quickly in all of the testcases if mdconfig, mount, umount, etc
  fails to avoid issues similar to this in the future

  Submitted by: Casey Peel <cpeel@isilon.com>
  Sponsored by: EMC / Isilon Storage Division

r274016:

  Integrate pjdfstest test suite execution into kyua

  pjdfstest execution is opt-in and must be done as root due to some of the
  assumptions made by the test suite and lack of error checking in the non-root
  case

  A description of how to execute pjdfstest with kyua is provided in
  share/pjdfstest/README

  Phabric: D824 (an earlier prototype patch)
  Relnotes: yes
  Sponsored by: EMC / Isilon Storage Division