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/test/test_frozen.py

@@ -0,0 +1,26 @@
+# 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"