Fix the frozen bytecode for __hello__ (betcha didn't know that existed

:-).

Add a test that prevents the __hello__ bytecode from going stale
unnoticed again.

The test also tests the loophole noted in SF bug #404545.  This test
will fail right now; I'll check in the fix in a minute.

Lib/__phello__.foo.py

+# This file exists as a helper for the test.test_frozen module.

Lib/test/output/test_frozen

+test_frozen
+Hello world...
+Hello world...
+Hello world...

Lib/test/test_frozen.py

+# Test the frozen module defined in frozen.c.
+
+from test_support import TestFailed
+import sys, os
+
+try:
+    import __hello__
+except ImportError, x:
+    raise TestFailed, "import __hello__ failed:", x
+
+try:
+    import __phello__
+except ImportError, x:
+    raise TestFailed, "import __phello__ failed:", x
+
+try:
+    import __phello__.spam
+except ImportError, x:
+    raise TestFailed, "import __phello__.spam failed:", x
+
+try:
+    import __phello__.foo
+except ImportError:
+    pass
+else:
+    raise TestFailed, "import __phello__.foo should have failed"

Python/frozen.c

@@ -7,21 +7,28 @@
    define a single frozen module, __hello__.  Loading it will print
    some famous words... */
 
+/* To regenerate this data after the bytecode or marshal format has changed,
+   go to ../Tools/freeze/ and freeze the hello.py file; then copy and paste
+   the appropriate bytes from M___main__.c. */
+
 static unsigned char M___hello__[] = {
 	99,0,0,0,0,1,0,0,0,115,15,0,0,0,127,0,
 	0,127,1,0,100,0,0,71,72,100,1,0,83,40,2,0,
 	0,0,115,14,0,0,0,72,101,108,108,111,32,119,111,114,
 	108,100,46,46,46,78,40,0,0,0,0,40,0,0,0,0,
-	115,8,0,0,0,104,101,108,108,111,46,112,121,115,1,0,
-	0,0,63,1,0,115,0,0,0,0,
+	40,0,0,0,0,40,0,0,0,0,115,8,0,0,0,104,
+	101,108,108,111,46,112,121,115,1,0,0,0,63,1,0,115,
+	0,0,0,0,
 };
 
+#define SIZE sizeof(M___hello__)
+
 static struct _frozen _PyImport_FrozenModules[] = {
 	/* Test module */
-	{"__hello__", M___hello__, 90},
+	{"__hello__", M___hello__, SIZE},
 	/* Test package (negative size indicates package-ness) */
-	{"__phello__", M___hello__, -90},
-	{"__phello__.spam", M___hello__, 90},
+	{"__phello__", M___hello__, -SIZE},
+	{"__phello__.spam", M___hello__, SIZE},
 	{0, 0, 0} /* sentinel */
 };