Add dev_compiler to the SDK build process.

sdk/bin/dev_compiler_sdk

Index: sdk/bin/dev_compiler_sdk
diff --git a/sdk/bin/dartanalyzer_sdk b/sdk/bin/dev_compiler_sdk
similarity index 86%
copy from sdk/bin/dartanalyzer_sdk
copy to sdk/bin/dev_compiler_sdk
index 28f37ab3d7b7a1f1c5f9ad929f455c4d5e9585c6..3dbc419042043eab4271f46e845d812663c604ab 100755
--- a/sdk/bin/dartanalyzer_sdk
+++ b/sdk/bin/dev_compiler_sdk
@@ -3,7 +3,7 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-# Run dartanalyzer.dart on the Dart VM. This script assumes the Dart SDK's
+# Run dev compiler on the Dart VM. This script assumes the Dart SDK's
 # directory structure.
 
 function follow_links() {
@@ -24,7 +24,7 @@ SDK_DIR="$(cd "${BIN_DIR}/.." ; pwd -P)"
 
 SDK_ARG="--dart-sdk=$SDK_DIR"
 
-SNAPSHOT="$BIN_DIR/snapshots/dartanalyzer.dart.snapshot"
+SNAPSHOT="$BIN_DIR/snapshots/dev_compiler.dart.snapshot"
 
 # We are running the snapshot in the built SDK.
 DART="$BIN_DIR/dart"