Switch devenv to use pkg packages

ports/tk/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.
 
 NACL_CONFIGURE_PATH=${SRC_DIR}/unix/configure
 
 NACLPORTS_CPPFLAGS+=" -Dmain=nacl_main"
 export LIBS="-lX11 -lxcb -lXau ${NACL_CLI_MAIN_LIB}"
 
 EXTRA_CONFIGURE_ARGS+=" --with-tcl=${NACLPORTS_LIBDIR}"
 
 if [ "${NACL_ARCH}" = "pnacl" ]; then
   EXTRA_CONFIGURE_ARGS+=" --disable-load"
 fi
 
 # Disable fallbacks for broken libc's that kick in for
 # cross-compiles since autoconf can't run target binaries.
 # The fallbacks seem to be non-general.
 export tcl_cv_strtod_buggy=ok
 
 if [ "${NACL_LIBC}" = "newlib" ]; then
   NACLPORTS_CPPFLAGS+=" -I${NACLPORTS_INCLUDE}/glibc-compat"
   LIBS+=" -lglibc-compat"
 fi
 
 # Ideally we would only add this flag for newlib builds but
 # linking of the shared library currently fails because it
 # tries to link libppapi_stub.a which is not built with -fPIC.
 EXTRA_CONFIGURE_ARGS+=" --disable-shared"
-
-PublishStep() {
-  PublishByArchForDevEnv
-}