Commits
Merging in latest from upstream (HDFVIEW/hdfview:refs/heads/hdfview-3) * commit 'b1642d97e59b470586ebeaa9aeaa471c83b02e8e': Mac README and tgz creation changes
Merging in latest from upstream (HDFVIEW/hdfview:refs/heads/hdfview-3) * commit 'b1642d97e59b470586ebeaa9aeaa471c83b02e8e': Mac README and tgz creation changes