Bug 1319228 - Disable the js shell in tup automation builds.
The js shell is symlinked back to the js objdir by a one off rule.
This fails in the current tup build because the symlink rule is
written in the Tupfile before the rule to build the shell.
MozReview-Commit-ID: EkuYqzPfs2C
--- a/browser/config/mozconfigs/linux64/tup
+++ b/browser/config/mozconfigs/linux64/tup
@@ -8,8 +8,9 @@ MOZ_AUTOMATION_UPLOAD_SYMBOLS=0
TOOLTOOL_DIR=${TOOLTOOL_DIR:-$topsrcdir}
export TUP=${TOOLTOOL_DIR}/tup/tup
. "$topsrcdir/browser/config/mozconfigs/linux64/common-opt"
. "$topsrcdir/build/mozconfig.common.override"
ac_add_options --enable-build-backends=Tup
+ac_add_options --disable-js-shell