support define_macros / undef_macros in setup.cfg

Doc/library/functools.rst

--- a/Doc/library/functools.rst	Sat Jun 09 17:31:59 2012 +0100
+++ b/Doc/library/functools.rst	Mon May 21 23:01:17 2012 -0400
@@ -40,7 +40,7 @@
    .. versionadded:: 3.2
 
 
-.. decorator:: lru_cache(maxsize=128, typed=False)
+.. decorator:: lru_cache(maxsize=100, typed=False)
 
    Decorator to wrap a function with a memoizing callable that saves up to the
    *maxsize* most recent calls.  It can save time when an expensive or I/O bound
@@ -49,9 +49,8 @@
    Since a dictionary is used to cache results, the positional and keyword
    arguments to the function must be hashable.
 
-   If *maxsize* is set to None, the LRU feature is disabled and the cache can
-   grow without bound.  The LRU feature performs best when *maxsize* is a
-   power-of-two.
+   If *maxsize* is set to None, the LRU feature is disabled and the cache
+   can grow without bound.
 
    If *typed* is set to True, function arguments of different types will be
    cached separately.  For example, ``f(3)`` and ``f(3.0)`` will be treated