Some improvements to the command-line analyzer's output.

pkg/analyzer_cli/test/driver_test.dart

Index: pkg/analyzer_cli/test/driver_test.dart
diff --git a/pkg/analyzer_cli/test/driver_test.dart b/pkg/analyzer_cli/test/driver_test.dart
index cd0e5df272e57815a56d5ad39896e7cfa00dd267..429eb3398b9cfaa01e525b0d56045e001f3c7a6e 100644
--- a/pkg/analyzer_cli/test/driver_test.dart
+++ b/pkg/analyzer_cli/test/driver_test.dart
@@ -143,7 +143,7 @@ main() {
           test('generates lints', () async {
             await runLinter();
             expect(outSink.toString(),
-                contains('[lint] Name types using UpperCamelCase.'));
+                contains('[lint] Name types using UpperCamelCase'));
           });
         });
 
@@ -169,7 +169,7 @@ main() {
           test('generates lints', () async {
             await runLinter();
             expect(outSink.toString(),
-                contains('[lint] Name types using UpperCamelCase.'));
+                contains('[lint] Name types using UpperCamelCase'));
           });
         });
 
@@ -318,9 +318,9 @@ linter:
         );
         expect(exitCode, 3);
         expect(outSink.toString(),
-            contains('but doesn\'t end with a return statement.'));
+            contains('but doesn\'t end with a return statement'));
         expect(outSink.toString(), contains('isn\'t defined'));
-        expect(outSink.toString(), contains('Avoid empty else statements.'));
+        expect(outSink.toString(), contains('Avoid empty else statements'));
       });
 
       test('test strong SDK', () async {