hdf5_ep

[svn-r6640] Purpose:
    Fix

Description:
    This is an analogue to the previous bug-fix for filters not being
    applied to data written but being applied when read. The old way was
    if the SZlib library couldn't deflate a dataset, then we'd munge
    along pretending that it was okay.

Solution:
    Trigger it as an error in this situation. The H5Z_pipeline code which
    calls this function can clear the error stack if need be.

Platforms tested:
    Modi4 (Parallel & Fortran)
    Burrwhite (Fortran & C++)
    Baldric (Fortran), but make check didn't work because of "libucb.so"
    error that I can't fix...)

Misc. update: