Issue #2335: Backport set literals syntax from Python 3.x.
diff --git a/Python/import.c b/Python/import.c
index 3ca452a..3df70a8 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -75,9 +75,10 @@
        Python 2.7a0: 62181 (optimize conditional branches:
 			    introduce POP_JUMP_IF_FALSE and POP_JUMP_IF_TRUE)
        Python 2.7a0  62191 (introduce SETUP_WITH)
+       Python 2.7a0  62201 (introduce BUILD_SET)
 .
 */
-#define MAGIC (62191 | ((long)'\r'<<16) | ((long)'\n'<<24))
+#define MAGIC (62201 | ((long)'\r'<<16) | ((long)'\n'<<24))
 
 /* Magic word as global; note that _PyImport_Init() can change the
    value of this global to accommodate for alterations of how the