If a link is specified on the command with the -d option, call the handle_links function on error from the H5Dopen command.
Updated test file results with error stack when link not found.
Tested: trunk
Merge 1.8 and h5dump/tools and tests based on tools library from trunk.
Reduced warnings.
HDFFV-7949:
Remove duplicated functions in h5ls
Tested: local linux,h5committest