hdf5_ep

[svn-r6087] 
Purpose:
   Adding internal shuffle filter
Description:
    With the combination of shuffling filter with general compression
    algorithm, the compression ratio may be improved without adding much
    encoding and decoding time for many real NASA datasets(especially
    floating data) and other application
    datasets(See techNotes).
Solution:
    SHuffle the bytes within the data to utilize the locality.
Platforms tested:
    arabica , eirene, modi4
Misc. update:
    Update MANIFEST if you add or remove any file.
    Update release_docs/RELEASE for bug fixes, new features, etc.
    Update applicable document files too.