" Use "--use-system-epsilon" for system EPSILON
" Use "-p" or "-d" for whatever user's choice of epsilon
" Use "-p 0" or "-d 0" for strict equality (same as default)
#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
Added an option to avoid dealing with NaNs
-N, --nan Avoid NaNs detection
Note: there is no shell script run for datasets with NaN because the output is non portable (different results and NaN strings for different systems)
Tested: windows, linux
