vchoi_fork

[svn-r9496] Purpose:
Fix SZIP filter to dynmically detect encoder.

Description:

Solution:
See:
http://hdf.ncsa.uiuc.edu/RFC/SZIP/Szip_dynamic_12_Oct.pdf

Changes to h5repack tests, contingent on detecting SZIP encoder.


Note new program:
	testh5repack_detect_szip

Checks fo rencoder, prints out "yes" or "no".  Used by hrepack.sh
to detect encoder.  Can also be used for windows tests.  This is
only used as part of the tests.

Had to modify Makefile to build and clean this program.