title: Is it possible to configure TFS not to mark file as read-only?
body: <p>The title pretty much says it all.
  I'm using a RFT, VS addin that allows me to edit a proprietary data file with a GUI. The problem is that this file doesn't show up in VS and when I start editing it via the GUI, VS doesn't check it out automatically (probably a bug of the VS addin). So, I've to check it out manually before editing it, otherwise the addin will crash when trying to save the file (because it is read-only), and sometimes will also corrupt the local working copy of this project.
  Everything would be much easier if TFS didn't mark the file not checked out as read only.
  Do you know if there is a way to instruct TFS to keep all the files as not read-only?</p>