Switch devenv to use pkg packages

ports/coreutils/build.sh

 # Copyright (c) 2014 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 BARE_EXECUTABLES="\
 [ basename cat chgrp chmod chown cksum comm cp csplit cut date dd df dir
 dircolors dirname du echo env expand expr factor false fmt fold ginstall head
 hostname id join kill link ln logname ls md5sum mkdir mkfifo mknod mv nl nice
 nohup od paste pathchk pr printenv printf ptx pwd readlink rm rmdir seq
 setuidgid sha1sum shred sleep sort split stat stty su sum sync tac tail tee
 test touch tr true tsort tty unexpand uniq unlink uname vdir wc whoami yes"
 
 EXECUTABLES=""
 for exe in ${BARE_EXECUTABLES}; do
   EXECUTABLES+=" src/${exe}"
 done
 
 TRANSLATE_PEXES=no
 
 export EXTRA_LIBS="${NACL_CLI_MAIN_LIB}"
 
 if [ "${NACL_LIBC}" = "newlib" ]; then
   NACLPORTS_CPPFLAGS+=" -I${NACLPORTS_INCLUDE}/glibc-compat"
   export LIBS+=" -lglibc-compat"
 fi
-
-PublishStep() {
-  PublishByArchForDevEnv
-}