Need for speed: Patch #921466 : sys.path_importer_cache is now used to cache valid and
invalid file paths for the built-in import machinery which leads to
fewer open calls on startup.
Also fix issue with PEP 302 style import hooks which lead to more open()
calls than necessary.
diff --git a/Misc/NEWS b/Misc/NEWS
index be5e4ea..a18e9e7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
Core and builtins
-----------------
+- Patch #921466: sys.path_importer_cache is now used to cache valid and
+ invalid file paths for the built-in import machinery which leads to
+ fewer open calls on startup.
+
- Patch #1442927: ``long(str, base)`` is now up to 6x faster for non-power-
of-2 bases. The largest speedup is for inputs with about 1000 decimal
digits. Conversion from non-power-of-2 bases remains quadratic-time in