Implement modular compilation

tool/node_test.sh

-#!/bin/bash
-set -e
-# switch to the root directory of dev_compiler
-cd $( dirname "${BASH_SOURCE[0]}" )/..
-
-output_dir=`mktemp -d /tmp/ddc_node_test.XXXXXX`
-
-ddc_options=(
-  --destructure-named-params
-  --modules=node
-  -o $output_dir
-)
-node_harmony_options=(
-  --harmony
-  --harmony_destructuring
-  --harmony_default_parameters
-)
-function compile() {
-    ./bin/dartdevc.dart "${ddc_options[@]}" $1
-}
-function run() {
-  NODE_PATH=$output_dir \
-    node "${node_harmony_options[@]}" -e \
-    "require('dart/_isolate_helper').startRootIsolate(require('$1').main, []);"
-}
-
-# TODO(ochafik): Add full language tests (in separate Travis env/matrix config).
-
-echo "*** Compiling SDK for node to $output_dir"
-
-dart bin/dartdevc.dart --force-compile --no-source-maps --sdk-check \
-    -l warning --dart-sdk tool/generated_sdk -o lib/runtime/ \
-    --no-destructure-named-params \
-    "${ddc_options[@]}" \
-    dart:_runtime \
-    dart:_debugger \
-    dart:js dart:mirrors dart:html || true
-
-echo "*** Compiling hello_dart_test"
-compile test/codegen/language/hello_dart_test.dart
-run hello_dart_test
-
-echo "*** Compiling DeltaBlue"
-compile test/codegen/DeltaBlue.dart
-run DeltaBlue