hdf5

[svn-r14792] bug fix: 	#1106 h5dump -b will dump ASCII values for datasets after the first one. One variable that controls the binary output was incorrectly reset to zero after a binary output was done a first time. The effect was that on cases of several datasets, the ones after the first were not binary written. Eliminated the resetting of that variable and tested a file with several datasets. Modified the test file so that it is easier to test with the tool binread, that reads the binary output of h5dump.

tested: windows, linux