hdf5_ep

[svn-r10747] Purpose:
bug fix

Description:
the fortran type integer*1 has become not portable.
define the image fortran datatype as "integer" and make special save, read, and palette functions
that use native integer for a memory type and UCHAR as disk type for the image data
added some more tests with new palette definitions

Solution:

Platforms tested:
linux
solaris

Misc. update: