hdf5_msb

The err_compat test relied on some "lines" on the standard output stream
to end with whitespace padding rather than newlines.  My introduction of
variadic TESTING() got rid of the padding.  I have straightened this out
by newline-terminating the stdout lines in the test program and in its
expected out.  I also add some newlines to the program's standard error
output so that the expected error output still matches.