Commits
Merging in latest from upstream (HDFVIEW/hdfview:refs/heads/master) * commit 'a98f4b5117ead0ec578b8bbd459cc573119380fd': Allow HDFView to be built without hdf4
Merging in latest from upstream (HDFVIEW/hdfview:refs/heads/master) * commit 'a98f4b5117ead0ec578b8bbd459cc573119380fd': Allow HDFView to be built without hdf4