hdf5_der

Merge pull request #613 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop

* commit '55d82c8f747b3a817a4a0b6b12e506b9c2dc0878':
  Add test header for log
  Verify default paths exist in table
  Make sure zip_perf program does not run concurrently