Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
traceback if Python is optimized.

 * delay the lookup of the size_t type, it is not available at startup
 * The second argument of the PyFrameObjectPtr constructor is optional, as
   done in other constructors
 * iter_builtins() and iter_globals() methods of PyFrameObjectPtr returns
   an empty tuple instead of None if Python is optimized
 * Fix py-bt and py-bt-full to handle correctly "optimized" frames
 * Frame.get_pyop() tries to get the frame pointer from PyEval_EvalCodeEx()
   if the pointer is optimized out in PyEval_EvalFrameEx()
diff --git a/Misc/NEWS b/Misc/NEWS
index 346326b..956146f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -97,7 +97,7 @@
 Library
 -------
 
-- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas 
+- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
   Stührk.
 
 - Issue #7502: Fix equality comparison for DocTestCase instances.  Patch by
@@ -314,6 +314,12 @@
 
 - Issue #13326: Clean __pycache__ directories correctly on OpenBSD.
 
+Tools/Demos
+-----------
+
+- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
+  traceback if Python is optimized.
+
 Tests
 -----