title: Android: Remove ALL FragmentTransactions from the back stack
body: <p>I add a bunch of FragmentTransactions to the back stack in one Tab, and I want to clear them ALL from the back stack when the user selects a different Tab. I can't find a method to clear stuff off the back stack, only methods to pop them off, and these don't even return the Fragment to you so you can close them. Any ideas?</p>