vscode "--extensionHomePath" option does not work when used with the vscode proxy (fixes #37)

src/vs/workbench/electron-main/window.ts

@@ -373,6 +373,7 @@ export class VSCodeWindow {
 			configuration.logPluginHostCommunication = cli.logPluginHostCommunication;
 			configuration.debugPluginHostPort = cli.debugPluginHostPort;
 			configuration.debugBrkPluginHost = cli.debugBrkPluginHost;
+			configuration.pluginHomePath = cli.pluginHomePath;
 		}
 
 		// Load config

src/vs/workbench/electron-main/windows.ts

@@ -671,6 +671,7 @@ export class WindowsManager {
 				configuration.logPluginHostCommunication = currentWindowConfig.logPluginHostCommunication;
 				configuration.debugBrkPluginHost = currentWindowConfig.debugBrkPluginHost;
 				configuration.debugPluginHostPort = currentWindowConfig.debugPluginHostPort;
+				configuration.pluginHomePath = currentWindowConfig.pluginHomePath;
 			}
 		}