fix bug in scriptcompactors bootstrap and added transform function which can be used by other trans…

lib/build/script_compactor.dart

Index: lib/build/script_compactor.dart
diff --git a/lib/build/script_compactor.dart b/lib/build/script_compactor.dart
index c1f7931f4c5183c088b6001fdffc861ae616385b..b3786f27b2d2bac9c96ecfde9f77e09c97cbd7d3 100644
--- a/lib/build/script_compactor.dart
+++ b/lib/build/script_compactor.dart
@@ -119,7 +119,7 @@ class ScriptCompactor {
     var mainScriptPath = _importPath(mainScript, primaryInput);
     buffer.writeln("import '$mainScriptPath' as i$i;");
     buffer.writeln();
-    buffer.writeln('void main() => i$i.main();');
+    buffer.writeln('void main() { i$i.main(); }');

[Siggi Cherem (dart-lang), 2015/02/23 18:15:16]

since this is not formatted automatically, maybe add the new-lines? not sure
this matters much though. I'm ok keeping it as it is.

Another option would be to remove the `void` return type :)

[jakemac, 2015/02/23 18:19:16]

I am inclined to just leave it, this fits on one line and I like supplying the
void :)

 
     var bootstrap = new Asset.fromString(bootstrapId, '$buffer');
     transform.addOutput(bootstrap);