Update ARM trusted root image to include precise security updates.

tools/trusted_cross_toolchains/trusted-toolchain-creator.armel.precise.sh

 #!/bin/bash
 # Copyright (c) 2012 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.
 #
 #@ This script builds the (trusted) cross toolchain for arm.
 #@ It must be run from the native_client/ directory.
 #@
 #@ The toolchain consists primarily of a jail with arm header and libraries.
 #@ It also provides additional tools such as QEMU.
 #@ It does NOT provide the actual cross compiler anymore.
 #@ The cross compiler is now comming straight from a debian package.
 #@ So there is a one-time step required for all machines using this TC.
 #@ Which is especially true for build-bots:
 #@
 #@  tools/trusted_cross_toolchains/trusted-toolchain-creator.armel.precise.sh  InstallCrossArmBasePackages
 #@
 #@
 #@  Generally this script is invoked as:
 #@  tools/trusted_cross_toolchains/trusted-toolchain-creator.armel.precise.sh <mode> <args>*
 #@  Available modes are shown below.
 #@
-#@
-#@ This Toolchain was tested with Ubuntu Lucid
+#@ This Toolchain was tested with Ubuntu Precise
 #@
 #@ Usage of this TC:
 #@  compile: arm-linux-gnueabi-gcc -march=armv7-a -isystem ${JAIL}/usr/include
 #@  link:    arm-linux-gnueabi-gcc -L${JAIL}/usr/lib -L${JAIL}/usr/lib/arm-linux-gnueabi
 #@                                 -L${JAIL}/lib -L${JAIL}/lib/arm-linux-gnueabi
 #@
 #@ Usage of QEMU
 #@  TBD
 #@
 #@ List of modes:
@@ skipping 19 matching lines @@
 ######################################################################
 # Package Config
 ######################################################################
 
 # this where we get the cross toolchain from for the manual install:
 readonly CROSS_ARM_TC_REPO=http://archive.ubuntu.com/ubuntu
 # this is where we get all the armel packages from
 readonly ARMEL_REPO=http://ports.ubuntu.com/ubuntu-ports
 
 readonly PACKAGE_LIST="${ARMEL_REPO}/dists/precise/main/binary-armel/Packages.bz2"
+readonly PACKAGE_LIST2="${ARMEL_REPO}/dists/precise-security/main/binary-armel/Packages.bz2"
 
 # Packages for the host system
 # NOTE: at one point we should get rid of the 4.5 packages
 readonly CROSS_ARM_TC_PACKAGES="\
   libc6-armel-cross \
   libc6-dev-armel-cross \
   libgcc1-armel-cross \
   libgomp1-armel-cross \
   linux-libc-dev-armel-cross \
   libgcc1-dbg-armel-cross \
@@ skipping 449 matching lines @@
 #
 #     Looks up package names in ${TMP}/Packages and write list of URLs
 #     to output file.
 #
 GeneratePackageList() {
   local output_file=$1
   echo "Updating: ${output_file}"
   /bin/rm -f ${output_file}
   shift
   for pkg in $@ ; do
-    local pkg_full=$(grep -A 1 "${pkg}\$" ${TMP}/Packages | egrep -o "pool/.*")
+    local pkg_full=$(grep -A 1 "${pkg}\$" ${TMP}/Packages | tail -1 | egrep -o "pool/.*")
     if [[ -z ${pkg_full} ]]; then
         echo "ERROR: missing package: $pkg"
         exit 1
     fi
     echo $pkg_full | sed "s/^pool\///" >> $output_file
   done
   # sort -o does an in-place sort of this file
   sort $output_file -o $output_file
 }
 
 #@
 #@ UpdatePackageLists
 #@
 #@     Regenerate the armel package lists such that they contain an up-to-date
 #@     list of URLs within the ubuntu archive.
 #@
 UpdatePackageLists() {
   local package_list="${TMP}/Packages.precise.bz2"
+  local package_list2="${TMP}/Packages.precise-security.bz2"
   DownloadOrCopy ${PACKAGE_LIST} ${package_list}
-  bzcat ${package_list} | egrep '^(Package:|Filename:)' > ${TMP}/Packages
+  DownloadOrCopy ${PACKAGE_LIST2} ${package_list2}
+  bzcat ${package_list} ${package_list2} | egrep '^(Package:|Filename:)' > ${TMP}/Packages
 
   GeneratePackageList ${ARMEL_BASE_DEP_LIST} "${ARMEL_BASE_PACKAGES}"
   GeneratePackageList ${ARMEL_EXTRA_DEP_LIST} "${ARMEL_EXTRA_PACKAGES}"
 }
 
 if [[ $# -eq 0 ]] ; then
   echo "ERROR: you must specify a mode on the commandline"
   echo
   Usage
   exit -1
 elif [[ "$(type -t $1)" != "function" ]]; then
   echo "ERROR: unknown function '$1'." >&2
   echo "For help, try:"
   echo "    $0 help"
   exit 1
 else
   ChangeDirectory
   SanityCheck
   "$@"
 fi