In a number of places code still revers
to "sys.platform == 'mac'" and that is
dead code because it refers to a platform
that is no longer supported (and hasn't been
supported for several releases).

Fixes issue #7908 for the trunk.
diff --git a/Lib/urllib.py b/Lib/urllib.py
index 652be75..6cb95f3 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -42,9 +42,7 @@
 MAXFTPCACHE = 10        # Trim the ftp cache beyond this size
 
 # Helper for non-unix systems
-if os.name == 'mac':
-    from macurl2path import url2pathname, pathname2url
-elif os.name == 'nt':
+if os.name == 'nt':
     from nturl2path import url2pathname, pathname2url
 elif os.name == 'riscos':
     from rourl2path import url2pathname, pathname2url