Refresh master with initial release/0.24 snapshot (#332)

* Initial port of release/0.24 source code

* Fix additional headers

* Fix a typo in launch.json

src/vs/workbench/services/hash/node/hashService.ts

@@ -0,0 +1,18 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { createHash } from 'crypto';
+import { IHashService } from 'vs/workbench/services/hash/common/hashService';
+
+export class HashService implements IHashService {
+
+	_serviceBrand: any;
+
+	public createSHA1(content: string): string {
+		return createHash('sha1').update(content).digest('hex');
+	}
+}