hdf5_ep

[svn-r19961] Purpose:
The shape same tests ran too long. Break them into smaller subtests
so that they can finish sub-test in a shorter time. Easier to tell
which one sub-test is taking too much time and/or errors occur in
one fo the sub-tests.

This one breaks the contig_hyperslab_dr_pio_test() into 4 smaller
sub-tests.

Tested: h5committest