Support for three-token characters (**=, >>=, <<=) which was written by
Michael Hudson, and support in general for the augmented assignment syntax.
The graminit.c patch is large!
diff --git a/Python/import.c b/Python/import.c
index 99e6204..f38ee41 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -66,7 +66,7 @@
/* XXX Perhaps the magic number should be frozen and a version field
added to the .pyc file header? */
/* New way to come up with the magic number: (YEAR-1995), MONTH, DAY */
-#define MAGIC (50821 | ((long)'\r'<<16) | ((long)'\n'<<24))
+#define MAGIC (50822 | ((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