vchoi_fork

[svn-r9462] Purpose:
Added tests
Code cleanup

Description:
New tests added for new version of H5Pget_data_transform and additional tests
to make sure that error conditions are handled properly by both
H5Pset_data_transform and H5Pget_data_transform.

Also cleaned up code to make it more compact.

Platforms tested:
sol + eirene + copper

Misc. update: