Initial VS Code 1.19 source merge (#571)

* Initial 1.19 xcopy

* Fix yarn build

* Fix numerous build breaks

* Next batch of build break fixes

* More build break fixes

* Runtime breaks

* Additional post merge fixes

* Fix windows setup file

* Fix test failures.

* Update license header blocks to refer to source eula

extensions/git/src/decorators.ts

@@ -31,7 +31,7 @@ function decorate(decorator: (fn: Function, key: string) => Function): Function
 function _memoize(fn: Function, key: string): Function {
 	const memoizeKey = `$memoize$${key}`;
 
-	return function (...args: any[]) {
+	return function (this: any, ...args: any[]) {
 		if (!this.hasOwnProperty(memoizeKey)) {
 			Object.defineProperty(this, memoizeKey, {
 				configurable: false,
@@ -51,7 +51,7 @@ function _throttle<T>(fn: Function, key: string): Function {
 	const currentKey = `$throttle$current$${key}`;
 	const nextKey = `$throttle$next$${key}`;
 
-	const trigger = function (...args: any[]) {
+	const trigger = function (this: any, ...args: any[]) {
 		if (this[nextKey]) {
 			return this[nextKey];
 		}
@@ -81,7 +81,7 @@ export const throttle = decorate(_throttle);
 function _sequentialize<T>(fn: Function, key: string): Function {
 	const currentKey = `__$sequence$${key}`;
 
-	return function (...args: any[]) {
+	return function (this: any, ...args: any[]) {
 		const currentPromise = this[currentKey] as Promise<any> || Promise.resolve(null);
 		const run = async () => await fn.apply(this, args);
 		this[currentKey] = currentPromise.then(run, run);
@@ -95,7 +95,7 @@ export function debounce(delay: number): Function {
 	return decorate((fn, key) => {
 		const timerKey = `$debounce$${key}`;
 
-		return function (...args: any[]) {
+		return function (this: any, ...args: any[]) {
 			clearTimeout(this[timerKey]);
 			this[timerKey] = setTimeout(() => fn.apply(this, args), delay);
 		};