6536602 add zlib compression support and upgrade to version 1.2.3 6536606 gzip compression for ZFS 6536608 restore zmod mapfile 6536631 decompress.c should use the new gzip support in zlib --HG-- rename : usr/src/uts/common/zmod/infblock.c => deleted_files/usr/src/uts/common/zmod/infblock.c rename : usr/src/uts/common/zmod/infblock.h => deleted_files/usr/src/uts/common/zmod/infblock.h rename : usr/src/uts/common/zmod/infcodes.c => deleted_files/usr/src/uts/common/zmod/infcodes.c rename : usr/src/uts/common/zmod/infcodes.h => deleted_files/usr/src/uts/common/zmod/infcodes.h rename : usr/src/uts/common/zmod/infutil.c => deleted_files/usr/src/uts/common/zmod/infutil.c rename : usr/src/uts/common/zmod/infutil.h => deleted_files/usr/src/uts/common/zmod/infutil.h rename : deleted_files/usr/src/uts/common/zmod/mapfile => usr/src/uts/common/zmod/mapfile