title: Get list of active PendingIntents in AlarmManager
body: <p>I there a way to get a list of the active <code>PendingIntent</code>s in a device?</p>
  <p>I am starting to work with <code>AlarmManager</code> and I like to see if my <code>PendingIntent</code>s are created and removed correctly.</p>
  <p>It would also be nice to see what other <code>PendingIntent</code>s are there, just as a curiosity to see if some app is doing some &quot;extra work&quot;.</p>