Conform to the TAP protocol
Make adjustments after running the script through prove

Sponsored-by: EMC / Isilon Storage Division
Produce a skip testplan instead of marking everything failed

Sponsored-by: EMC / Isilon Storage Division
Use TMPDIR instead of PJDFSTEST_TARGET

Discussed-with: asomers, pho
Sponsored-by: EMC / Isilon Storage Division
Merge branch 'isilon-atf' of https://github.com/yaneurabeya/freebsd into isilon-atf