hdf5_ep

[svn-r19288] Bug 1934 - I added support of all data types for H5Tget_order.  I added a new byte order
H5T_ORDER_MIXED specifically for compound types and its derived types.  They report mixed 
orders if they have members of different orders.

There is no change to configure.in, config, and Makefile.am in the top directory.  They have 
some property changes when I merged the code from 1.8.  

Tested on jam.  I tested the same change for 1.8 with h5committest.