title: xcode prompt file is locked for editing doesn't remember Unlock choice after choosing "Do not show this message again"
body: <p>If I start typing in a readonly file in Xcode for the first time, I get prompted with a dialog that basically says the file is locked for editing, and asks me if I want to unlock it.</p>
  
  <p>If I choose Unlock, I can continue editing the file.  At one point, I got annoyed at this (as I will always want it to unlock), and so I clicked "Do not show this message again", with the expectation that it would remember my choice.</p>
  
  <p>However, while I no longer get prompted, it also does not unlock the files anymore - it seems the default without being prompted is always "Don't Unlock".</p>
  
  <p><strong>Is there a way to automatically choose "Unlock" without being prompted every time?</strong> </p>
  
  <p>(Bit of background - I'm using Perforce for source control, and have an Xcode Behavior script set up to check out files when they are unlocked based on <a href="http://kb.perforce.com/article/1735/automatically-checking-out-files-for-edit-in-xcode-43" rel="nofollow">http://kb.perforce.com/article/1735/automatically-checking-out-files-for-edit-in-xcode-43</a>, since Xcode no longer integrates nicely with Perforce)</p>