hdfview

Merging in latest from upstream (HDFVIEW/hdfview:refs/heads/hdfview-3)

* commit '5874f447a8e279072f7e46fbbecea9398be3414b':
  Fix calculation of number of Bitmask Buttons needed for Array types
  Fix weirdness caused by missing shell text for dialogs
  Fix output for HDF4 File Annotations