hdfview

Merge pull request #179 in HDFVIEW/hdfview from ~BYRN/hdfview_adb:hdfview-3 to hdfview-3

* commit '72f59d51f5f4d54a7b98869fde321c62cd658f6a':
  Merge from master
  Resync with release
  Add record task
  Convert arg line to arg value, update release text
  Remove unsupported check
  Compound default constructor