Bump to 2.6.4rc2
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index 55f72c7..be5de79 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "2.6.4rc1"
+IDLE_VERSION = "2.6.4rc2"