Implement PEP 3115 -- new metaclass syntax and semantics.
The compiler package hasn't been updated yet; test_compiler.py fails.
Otherwise all tests seem to be passing now.  There are no occurrences
of __metaclass__ left in the standard library.
Docs have not been updated.
diff --git a/Python/import.c b/Python/import.c
index fae60cf..33953c7 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -72,9 +72,10 @@
 		      3030 (added keyword-only parameters)
 		      3040 (added signature annotations)
 		      3050 (print becomes a function)
+		      3060 (PEP 3115 metaclass syntax)
 .
 */
-#define MAGIC (3050 | ((long)'\r'<<16) | ((long)'\n'<<24))
+#define MAGIC (3060 | ((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