Added temporary replacement of resource factories for Ecore and GenModel
files (scoped to resource set) to use a modified resource that uses the
Unix line delimiter instead of the system delimiter. This is required
because the MinimalEcore builder automatically saves the derived Ecore
file and reloads the GenModel. If platform-specific line delimiters are
used (as before), one has changes in these files even though no relevant
change has been applied to the MinimalEcore file.