h4h5tools

Purpose:
Add several helper API functions
Description:
Add H4toH5get_groupname,
Add H4toH5get_vdataname,
Add H4toH5get_SDSname,
Add H4toH5get_imagename,
Add H4toH5get_palname.

The above functions will return the absolute path of HDF5 object converted from the HDF4.

Solution:
Platforms tested:
eirene