update hooks: scrub some more old packages

These shouldn't be around anymore, so let's move them.

BUG=None
TEST=build_packages for x86-alex worked

Change-Id: I95df39e40b62c919df0bafcb490d8caa48c04dd4
Reviewed-on: https://gerrit.chromium.org/gerrit/21806
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>

chroot_version_hooks.d/32_scrub_old_pkgs

@@ -0,0 +1,28 @@
+# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# We've been migrating packages of late, so make sure the old stuff gets
+# cleaned out.
+
+pkgs=(
+  dev-util/cvs
+  dev-util/cvsps
+  dev-util/git
+  dev-util/subversion
+  '<=media-libs/jpeg-6b-r9:62'
+  '<media-libs/libpng-1.2.45-r2:1.2'
+  net-misc/neon
+  sys-apps/parted
+)
+
+for board_root in /build/* ; do
+  board=${board_root##*/}
+  emerge_board=$(type -P emerge-${board} 2>/dev/null || true)
+  if [[ -x "${emerge_board}" ]]; then
+    CLEAN_DELAY=0 ${emerge_board} -q --unmerge "${pkgs[@]}" || true
+    eclean-${board} -d packages || true
+  fi
+done
+
+exit 0