title: Clear ALL clipboard entries
body: <p>On my Samsung Tab 3 running Android 4.1.2 multiple copies to clipboard produce a clipboard containing each copy.  This is seen through a button on the tight bottom of the slide-up keyboard. </p>
  
  <p>I'd like to delete all these copies programmatically, however, the ClipboardManager doesn't appear to offer methods to do this.  How can delete everything that has been copied to the clipboard?</p>
  
  <p>Thanks,</p>
  
  <p>Chris</p>