5470 libz should be part of illumos
1002 Integrate zlib

*** 23,32 ****
--- 23,33 ----
  # Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
  # Copyright (c) 2012 by Delphix. All rights reserved.
  # Copyright (c) 2012, Joyent, Inc. All rights reserved.
  # Copyright (c) 2013 Gary Mills
  # Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ # Copyright (c) 2015 Gary Mills
  
  include ../Makefile.master
  
  #       Note that libcurses installs commands along with its library.
  #       This is a minor bug which probably should be fixed.
*** 262,271 ****
--- 263,273 ----
          librstp         \
          libreparse      \
          libhotplug      \
          libfruutils     .WAIT   \
          libfru          \
+         zlib            \
          $($(MACH)_SUBDIRS)
  
  i386_SUBDIRS=           \
          libfdisk        \
          libsaveargs
*** 499,508 ****
--- 501,511 ----
          smhba           \
          libima          \
          libsun_ima      \
          mpapi           \
          libreparse      \
+         zlib            \
          $($(MACH)_HDRSUBDIRS)
  
  i386_HDRSUBDIRS=        \
          libfdisk        \
          libsaveargs
*** 638,648 ****
  udapl/udapl_tavor:      udapl/libdat
  libzfs:         libdevid libgen libnvpair libuutil \
                  libadm libavl libefi libidmap libmd libzfs_core libm
  libzfs_core:    libnvpair
  libzfs_jni:     libdiskmgt libnvpair libzfs
! libzpool:       libavl libumem libnvpair libcmdutils
  libsec:         libavl libidmap
  brand:          libc libsocket
  libshare:       libscf libzfs libuuid libfsmgt libsecdb libumem libsmbfs
  libexacct/demo: libexacct libproject libsocket libnsl
  libtsalarm:     libpcp
--- 641,651 ----
  udapl/udapl_tavor:      udapl/libdat
  libzfs:         libdevid libgen libnvpair libuutil \
                  libadm libavl libefi libidmap libmd libzfs_core libm
  libzfs_core:    libnvpair
  libzfs_jni:     libdiskmgt libnvpair libzfs
! libzpool:       libavl libumem libnvpair libcmdutils zlib
  libsec:         libavl libidmap
  brand:          libc libsocket
  libshare:       libscf libzfs libuuid libfsmgt libsecdb libumem libsmbfs
  libexacct/demo: libexacct libproject libsocket libnsl
  libtsalarm:     libpcp