Work for bugzilla 1754: h5diff: support comparing through links.
Description:
merged from hdf5 trunk (18164, 18165, 18166, 18167, 18170, 18266, 18273)
Tested:
h5committest (jam, amani and linew)
Additional fix relted to the fix of bug1672.
Description:
The fix of bug1672 caused some changes of output which required modifying
some test cases. After some discussion, restoring the changes of the test
cases was decided. After many experiments for the solution, this fix was
made so the code which improved performance can stay.
Tested on Jam.
Fix Bug1672 - Display garbage value on LE machine for BE data.
Description:
Casuing by calling diff_dataset twice when -r or no option was given.
Change to call it once which fix the problem.
It also improves the performance. (diffing time in half)
According further test, it also occurred on BE machine as well and it
seems occruing only with the BE data attached to Bugzilla.
Don't know how the file was created. Anyway this fix will prevent
from diffing with garbage values in similiar potential case.
Tested on:
linux32 (jam) , linux64 (almani), solaris (linew)
bug fix
a new line was not inserted at the end of output, causing diff to complain between linux and frebsd
tested: linux (freebsd tested on the trunk)
#1368 (E1) h5diff: implement "not comparable" messages. Implemented RFC. The new option is <-c, --compare List objects that are not comparable>
added some test cases
tested: windows, linux
