Eolian: Add back directory_scan as it's apparently needed by parse

scripts/eolian_generate.py

@@ -921,6 +921,7 @@ generated_function_counter = Counter()
 
 for path in args.paths:
     for dirpath, dirnames, filenames in os.walk(path):
+        eolian.directory_scan(dirpath)
         for filename in filenames:
             if filename.endswith(".eo"):
                 f = os.path.join(dirpath, filename)