chore(core): move compiler out of core

BREAKING CHANGE

All imports from 'angular2/core/compiler' should be changed to 'angular2/compiler'.

modules/angular2/test/compiler/eval_module.dart

@@ -0,0 +1,55 @@
+import "dart:isolate";
+import "dart:async";
+
+Uri toDartDataUri(String source) {
+  return Uri.parse("data:application/dart;charset=utf-8,"
+      "${Uri.encodeComponent(source)}");
+}
+
+createIsolateSource(String moduleSource, List<List<String>> moduleImports) {
+  var moduleSourceParts = ['import "dart:isolate";'];
+  moduleImports.forEach((sourceImport) {
+    String modName = sourceImport[0];
+    String modAlias = sourceImport[1];
+    moduleSourceParts.add("import '${modName}' as ${modAlias};");
+  });
+  moduleSourceParts.add(moduleSource);
+  moduleSourceParts.add("""
+main(List args, SendPort replyPort) {
+  replyPort.send(run(args));
+}
+""");
+  return moduleSourceParts.join('\n');
+}
+
+var timeStamp = new DateTime.now().millisecondsSinceEpoch;
+
+dynamic callModule(dynamic data) {
+  return data.map((a) => a + 1);
+}
+
+evalModule(String moduleSource, List<List<String>> imports, List args) {
+  String source = createIsolateSource(moduleSource, imports);
+  Completer completer = new Completer();
+  RawReceivePort receivePort;
+  receivePort = new RawReceivePort((message) {
+    receivePort.close();
+    completer.complete(message);
+  });
+  // Note: we have a special karma plugin that sends files under
+  // urls like /package_1234 as permanently cached.
+  // With this, spawning multiple isolates gets faster as Darts does not
+  // reload the files from the server.
+  var packageRoot = Uri.parse('/packages_${timeStamp}');
+  return Isolate
+      .spawnUri(toDartDataUri(source), args, receivePort.sendPort,
+          packageRoot: packageRoot)
+      .then((isolate) {
+    RawReceivePort errorPort;
+    errorPort = new RawReceivePort((message) {
+      completer.completeError(message);
+    });
+    isolate.addErrorListener(errorPort.sendPort);
+    return completer.future;
+  });
+}