Comment 1 for bug 1820433

Well, this is embarrassing. It appears that this function is not working correctly. It is _only_ called when loading pcbnew files (should also be called for eeschema) AND it uses the eeschema autosave prefix instead of the pcbnew prefix.

So I'll propose two actions here:
1) Unify the autosave prefix strings as there doesn't appear to be a reason for them to be different
2) Add this function to eeschema.

Objections?