diff -r a8d13ee0ce68 -r 5b0a3f6cbead mercurial/windows.py
--- a/mercurial/windows.py	Mon Apr 04 16:21:59 2011 -0500
+++ b/mercurial/windows.py	Mon Apr 04 11:41:54 2011 +0200
@@ -132,6 +132,9 @@
 def set_flags(f, l, x):
     pass
 
+def checkexec(path):
+    return False
+
 def set_binary(fd):
     # When run without console, pipes may expose invalid
     # fileno(), usually set to -1.