Update to latest common lib

Fix ts errors after updating to latest mobile-cli-lib sha.

Author: rosen-vladimirov

lib/common

@@ -461,7 +461,7 @@ export class AndroidProjectService extends projectServiceBaseLib.PlatformProject
 		shell.cp(cpArg, paths, projectRoot);
 	}
 
-	private spawn(command: string, args: string[], opts?: any): IFuture<void> {
+	private spawn(command: string, args: string[], opts?: any): IFuture<ISpawnResult> {
 		return this.$childProcess.spawnFromEvent(command, args, "close", opts || { stdio: "inherit" });
 	}
 

lib/services/android-project-service.ts

@@ -172,6 +172,10 @@ export class FileSystemStub implements IFileSystem {
 	rm(options: string, ...files: string[]): void {
 		// Mock
 	}
+
+	deleteEmptyParents(directory: string): IFuture<void> {
+		return Future.fromResult();
+	}
 }
 
 export class ErrorsStub implements IErrors {