Add a generic ie marker that we can use in the status files

tools/testing/dart/test_options.dart

Index: tools/testing/dart/test_options.dart
===================================================================
--- tools/testing/dart/test_options.dart	(revision 34349)
+++ tools/testing/dart/test_options.dart	(working copy)
@@ -665,6 +665,9 @@
     // Set the javascript command line flag for less verbose status files.
     configuration['jscl'] = TestUtils.isJsCommandLineRuntime(runtime);
 
+    // Allow suppression that is valid for all ie versions
+    configuration['ie'] = runtime.startsWith('ie');
+
     // Expand the test selectors into a suite name and a simple
     // regular expressions to be used on the full path of a test file
     // in that test suite. If no selectors are explicitly given use