h5edit

The HDF5 library error stack was printed automatically.  The stack dumping
usually is not too helpful for most tool users. The output also contains
HDF5 version numbers, source directory paths, making the test output comparison
very system dependent.

Changed it so that error stack does not get printed by default.
(May need to add a switch to turn it on (or not to turn it off) when one wants
to debug the tool.