hdf5_ep

[svn-r1285] 
fixed the last bug with the repeating in the tstr.h5 test
added an extra parameter to the h5dump_sprint function.  it was for the repeat_threshold
before it was hardcoded as 8 but now i let it be a parameter so that if it is set to
a negative number then it will not count the repeats and print all the values out.