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/distutils/file_util.py b/Lib/distutils/file_util.py
index d8e8fd5..b3d9d54 100644
--- a/Lib/distutils/file_util.py
+++ b/Lib/distutils/file_util.py
@@ -133,18 +133,9 @@
     if dry_run:
         return (dst, 1)
 
-    # On Mac OS, use the native file copy routine
-    if os.name == 'mac':
-        import macostools
-        try:
-            macostools.copy(src, dst, 0, preserve_times)
-        except os.error, exc:
-            raise DistutilsFileError(
-                  "could not copy '%s' to '%s': %s" % (src, dst, exc[-1]))
-
     # If linking (hard or symbolic), use the appropriate system call
     # (Unix only, of course, but that's the caller's responsibility)
-    elif link == 'hard':
+    if link == 'hard':
         if not (os.path.exists(dst) and os.path.samefile(src, dst)):
             os.link(src, dst)
     elif link == 'sym':