Try to build dev bundle again

This time with actual Node 0.10.40, not some random commit because
Jenkins is running old versions of git where `git clone -b garbage`
isn't an error!

scripts/generate-dev-bundle.sh

@@ -44,7 +44,7 @@ S3_HOST="s3.amazonaws.com/com.meteor.jenkins"
 # Update these values after building the dev-bundle-node Jenkins project.
 # Also make sure to update NODE_VERSION in generate-dev-bundle.ps1.
 NODE_VERSION=0.10.40
-NODE_BUILD_NUMBER=17
+NODE_BUILD_NUMBER=18
 NODE_TGZ="node_${PLATFORM}_v${NODE_VERSION}.tar.gz"
 if [ -f "${CHECKOUT_DIR}/${NODE_TGZ}" ] ; then
     tar zxf "${CHECKOUT_DIR}/${NODE_TGZ}"