Fix link bug correctly.

dart/tools/make_links.py

Index: dart/tools/make_links.py
diff --git a/dart/tools/make_links.py b/dart/tools/make_links.py
index abec0608e5bb4416c410bf80600f6e4956bbf60f..e053d834941bc8ccad0f86fdfc45443cce5e70e1 100644
--- a/dart/tools/make_links.py
+++ b/dart/tools/make_links.py
@@ -21,16 +21,17 @@ import utils
 
 
 def make_link(source, target):
-  if os.path.islink(target):
-    os.unlink(target)
-
   # TODO(ahe): Remove this code when the build bots are green again.
-  bug_cleanup = os.path.join(source, 'lib')
+  bug_cleanup = os.path.join(target, 'lib')

[ahe, 2012/11/19 11:50:11]

Using target here as source is relative to BUILD_ROOT.

   if os.path.islink(bug_cleanup):
     print 'Removing %s' % bug_cleanup
+    sys.stdout.flush()
     os.unlink(bug_cleanup)
   # End of temporary code.
 
+  if os.path.islink(target):
+    os.unlink(target)
+
   if utils.GuessOS() == 'win32':
     return subprocess.call(['mklink', '/j', target, source])
   else: