importing new SZ files

thirdparty/SZ/COPYRIGHT.txt

thirdparty/SZ/sz/include/TightDataPointStorageD.h

thirdparty/SZ/sz/include/TightDataPointStorageF.h

thirdparty/SZ/sz/include/TypeManager.h

thirdparty/SZ/sz/include/callZlib.h

thirdparty/SZ/sz/include/dataCompression.h

thirdparty/SZ/sz/include/pastriD.h

thirdparty/SZ/sz/include/pastriF.h

thirdparty/SZ/sz/include/sz.h

thirdparty/SZ/sz/include/sz_double.h

thirdparty/SZ/sz/include/sz_double_pwr.h

thirdparty/SZ/sz/include/sz_float.h

thirdparty/SZ/sz/include/sz_float_pwr.h

thirdparty/SZ/sz/include/szd_double.h

thirdparty/SZ/sz/include/szd_double_pwr.h

thirdparty/SZ/sz/include/szd_float.h

thirdparty/SZ/sz/include/szd_float_pwr.h

thirdparty/SZ/sz/include/utility.h

thirdparty/SZ/sz/src/ByteToolkit.c

thirdparty/SZ/sz/src/DynamicDoubleArray.c