Add top level build script for building packages.

ports/texlive/build.sh

 #!/bin/bash
 # Copyright (c) 2013 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.
 
-source pkg_info
-source ../../build_tools/common.sh
 
 export EXTRA_CONFIGURE_ARGS="--prefix= --exec-prefix="
 export EXTRA_CONFIGURE_ARGS="${EXTRA_CONFIGURE_ARGS} \
                              --disable-native-texlive-build \
                              --enable-build-in-source-tree \
                              --disable-shared \
                              --disable-lcdf-typetools \
                              --disable-largefile \
                              --without-luatex \
                              --enable-mktextex-default \
                              --without-x \
                              --without-system-freetype \
                              --without-system-freetype2 \
                              --without-system-gd \
                              --without-system-graphite \
                              --without-system-icu \
                              --without-system-kpathsea \
                              --without-system-ptexenc \
                              --without-system-t1lib \
                              --without-system-teckit \
                              --without-system-xpdf"
 
 export NACLPORTS_LDFLAGS="${NACLPORTS_LDFLAGS} -Wl,--as-needed"
 
 ConfigureStep() {
-  local SRC_DIR=${NACL_PACKAGES_REPOSITORY}/${PACKAGE_DIR}
   ChangeDir ${SRC_DIR}
 
   # TODO(phosek): we should be able to run reautoconf at this point, but
   # this requires automake > 1.12 which is not currently shipped in Ubuntu
   #${SRC_DIR}/reautoconf
 
   local build_host=$(${SRC_DIR}/build-aux/config.guess)
 
   (
     export LIBS="-ltar -lppapi_simple -lnacl_io \
@@ skipping 43 matching lines @@
 
   InstallNaClTerm ${ASSEMBLY_DIR}
   LogExecute cp ${START_DIR}/background.js ${ASSEMBLY_DIR}
   LogExecute cp ${START_DIR}/manifest.json ${ASSEMBLY_DIR}
   LogExecute cp ${START_DIR}/icon_16.png ${ASSEMBLY_DIR}
   LogExecute cp ${START_DIR}/icon_48.png ${ASSEMBLY_DIR}
   LogExecute cp ${START_DIR}/icon_128.png ${ASSEMBLY_DIR}
   ChangeDir ${PUBLISH_DIR}
   LogExecute zip -r texlive-2013.zip texlive
 }
-
-PackageInstall
-exit 0