Changes to enable buildbot to build autotests and package them

chromeos/scripts/build_packages

Index: chromeos/scripts/build_packages
diff --git a/chromeos/scripts/build_packages b/chromeos/scripts/build_packages
index 8a41c7b6f2a1e4e0e3bd8bc9868d0f08a0127fb0..cda7a062cfae82d26a15c3e0eaee37d2c47dc686 100755
--- a/chromeos/scripts/build_packages
+++ b/chromeos/scripts/build_packages
@@ -28,6 +28,8 @@ DEFINE_boolean usepkg $FLAGS_FALSE \
   "Use binary packages to bootstrap when possible."
 DEFINE_boolean withdev $FLAGS_TRUE \
   "Build useful developer friendly utilities."
+DEFINE_boolean withautotest $FLAGS_FALSE \
+  "Build autotest client code."
 DEFINE_integer jobs -1 \
   "How many packages to build in parallel at maximum."
 
@@ -65,3 +67,7 @@ if [[ $FLAGS_withdev -eq $FLAGS_TRUE ]]; then
 else
   sudo emerge-${FLAGS_board} -uDNv $EMERGE_FLAGS chromeos-base/chromeos
 fi
+
+if [[ $FLAGS_withautotest -eq $FLAGS_TRUE ]]; then
+  ./build_autotest.sh --noprompt --board=${FLAGS_board}
+fi