Preferences lastWarOutDir is not updated

A small annoyance. The lastWarOutDir is no longer being updated in com.google.gdt.eclipse.core.prefs. We have a cross platform team and this prefs file is actually being shared between workspaces, but it used to function that this file would be updated whenever dev mode was run, it is no longer being updated and I have ended up with an invalid file path for linux due to it being committed by a windows user and the plugin creating the lastWarOutDir everytime it runs.

If this value is no longer being used, I would suggest that in the latest versions of the plugin it should be ignored, directory should not be created, it should not be updated.

Super trivial annoyance at this point.

I have removed the value from my local copy of the file to stop the directory from being created.

Start by tracing the dev mode path that handles com.google.gdt.eclipse.core.prefs and the lastWarOutDir value. Determine whether the value is still used, then verify the behavior across shared Windows and Linux workspaces. Done means the preference no longer causes an invalid directory to be created, or is updated correctly if it remains required.

Written by the indexing model from the issue text.