Add a note that this file should be kept compatible with Python 1.5.2,

per PEP 291 (although there are currently string methods used).

This patch makes it compatible with 2.2, at least, by detecting
universal newline support.

Tools/freeze/modulefinder.py

 """Find modules used by a script, using introspection."""
 
+# This module should be kept compatible with Python 1.5.2, see PEP 291.
+
 import dis
 import imp
 import marshal
@@ -127,14 +129,20 @@ class ModuleFinder:
 
     def run_script(self, pathname):
         self.msg(2, "run_script", pathname)
-        fp = open(pathname, "U")
+        if hasattr(sys.stdout, "newlines"): # detect universal newline support
+            fp = open(pathname, "U")
+        else:
+            fp = open(pathname, "r")
         stuff = ("", "r", imp.PY_SOURCE)
         self.load_module('__main__', fp, pathname, stuff)
 
     def load_file(self, pathname):
         dir, name = os.path.split(pathname)
         name, ext = os.path.splitext(name)
-        fp = open(pathname, "U")
+        if hasattr(sys.stdout, "newlines"):
+            fp = open(pathname, "U")
+        else:
+            fp = open(pathname, "r")
         stuff = (ext, "r", imp.PY_SOURCE)
         self.load_module(name, fp, pathname, stuff)