HDFFV-7607: h5ls - improve efficiency of test scripts - removing top 3 extra lines from expected output files
Description:
Merged from hdf5 trunk r20927.
This is a subtask from 'HDFFV-7514 - gmqs: h5dump - improve effectiveness of testing scripts for handling expected output files'.
This is prerequisite for 'HDFFV-7602 tools - upgrade tools' test scripts to share test files among tools, providing framework for test file re-usability.'
Tested:
jam (linux32-LE), koala (linux64-LE), heiwa (linuxppc64-BE), tejeda (mac32-LE), linew (solaris-BE)
Description: Added -E option to h5ls. When set, this alows h5ls to enter
external files (currently only through an external link). The -r option by
itself will no longer allow h5ls to traverse external links.
Tested: kagiso, linew, smirom (h5committest)
