Fix Android tests affected by changes in stubs

Author: atorralba

java/ql/test/library-tests/dataflow/taintsources/IntentSources.java

@@ -1,11 +1,16 @@
 package com.example.myapp;
 
 import android.app.Activity;
+import android.content.Context;
 
 public class IntentSources extends Activity {
 
 	private static void sink(Object o) {}
 
+	public IntentSources(Context base) {
+		super(base);
+	}
+
 	public void test() throws java.io.IOException {
 
 		String trouble = this.getIntent().getStringExtra("key");