Change imports etc to new syntax.

Change imports etc to new syntax.
Fix issues wutrh handling console messages from DRT when using --list-tests and --list-groups.
Committed: https://code.google.com/p/dart/source/detail?r=13327

[Siggi Cherem (dart-lang), 2012-10-05 00:39:52]

lgtm, but if the part-of header works, let's do that too!

https://codereview.chromium.org/11033042/diff/1/utils/testrunner/run_pipeline...
File utils/testrunner/run_pipeline.dart (right):

https://codereview.chromium.org/11033042/diff/1/utils/testrunner/run_pipeline...
utils/testrunner/run_pipeline.dart:9: part 'pipeline_utils.dart';
not sure if it works yet, but if it does, please add also the back references
from sourced files.

In this example, you should be able to add to pipeline_utils.dart a header
saying:

part of pipeline;

[gram, 2012-10-05 21:27:40]

PTAL. I found some bugs that had crept in to the list-tests and list-groups
handling in DRT too.

https://codereview.chromium.org/11033042/diff/1/utils/testrunner/run_pipeline...
File utils/testrunner/run_pipeline.dart (right):

https://codereview.chromium.org/11033042/diff/1/utils/testrunner/run_pipeline...
utils/testrunner/run_pipeline.dart:9: part 'pipeline_utils.dart';
On 2012/10/05 00:39:53, sigmund wrote:
> not sure if it works yet, but if it does, please add also the back references
> from sourced files.
> 
> In this example, you should be able to add to pipeline_utils.dart a header
> saying:
> 
> part of pipeline;


If works in vm and Dartium but not dart2js.

[Siggi Cherem (dart-lang), 2012-10-05 21:37:51]

lgtm, but not sure about the bug fix changes and what they do

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/layout_te...
File utils/testrunner/layout_test_runner.dart (right):

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/layout_te...
utils/testrunner/layout_test_runner.dart:8: // dart2js is not handling 'part of'
properly yet; when it does uncomment this.
nit: write as TODO(gram): ...

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/standard_...
File utils/testrunner/standard_test_runner.dart (right):

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/standard_...
utils/testrunner/standard_test_runner.dart:5: // dart2js is not handling 'part
of' properly yet; when it does uncomment this.
ditto

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/standard_...
utils/testrunner/standard_test_runner.dart:166: if (notifyDone != null) {
I don't see what's the relation of this part of the change with the import
changes?

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/testrunne...
File utils/testrunner/testrunner.dart (right):

https://codereview.chromium.org/11033042/diff/4002/utils/testrunner/testrunne...
utils/testrunner/testrunner.dart:195: out.writeString(msg.substring(idx+3));
style nit: please add spaces around +