Change the order in which parts of code objects are serialized

Move co_consts last.  For the reason, see:
faster-cpython/ideas#66 (comment)

Author: gvanrossum

Lib/importlib/_bootstrap_external.py

@@ -372,7 +372,7 @@ def _write_atomic(path, data, mode=0o666):
 # Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
 # in PC/launcher.c must also be updated.
 
-MAGIC_NUMBER = (9995).to_bytes(2, 'little') + b'\r\n'
+MAGIC_NUMBER = (9994).to_bytes(2, 'little') + b'\r\n'
 _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little')  # For import.c
 
 _PYCACHE = '__pycache__'

Python/frozen_hello.h

@@ -5,10 +5,10 @@ const unsigned char _Py_M__hello[] = {
     0,218,8,60,109,111,100,117,108,101,62,114,0,0,0,0,
     122,14,60,102,114,111,122,101,110,32,104,101,108,108,111,62,
     115,16,0,0,0,100,0,90,0,101,1,100,1,131,1,1,
-    0,100,2,83,0,41,3,84,122,12,72,101,108,108,111,32,
-    119,111,114,108,100,33,78,41,2,90,11,105,110,105,116,105,
-    97,108,105,122,101,100,218,5,112,114,105,110,116,169,0,243,
-    0,0,0,0,243,4,0,0,0,4,0,12,1,114,4,0,
-    0,0,115,16,0,0,0,15,19,1,12,1,6,7,21,1,
-    22,1,22,1,22,1,22,114,3,0,0,0,
+    0,100,2,83,0,41,2,90,11,105,110,105,116,105,97,108,
+    105,122,101,100,218,5,112,114,105,110,116,169,0,243,0,0,
+    0,0,243,4,0,0,0,4,0,12,1,114,4,0,0,0,
+    115,16,0,0,0,15,19,1,12,1,6,7,21,1,22,1,
+    22,1,22,1,22,114,3,0,0,0,41,3,84,122,12,72,
+    101,108,108,111,32,119,111,114,108,100,33,78,
 };