Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please?

just-created (and empty) instance.  Added tests for this. Thanks
Jonathan Share.

Thanks to Jeroen Ruigrok van der Werven.

__init__ to __new__ to enforce immutability, and remove "rational." from repr
and the parens from str.

and backported to 2.5.2 in 60056.

create a new weakref to the object.

Added LoggerAdapter class, changed copyright dates, made check for extra parameter passed to logging methods explicitly against None rather than a truth value.

Added section on passing contextual information to logging and documentation for the LoggerAdapter class.

Added builddoc.bat to Doc/

on the _weakref extension (and maybe other modules, too)

leaked_storage: Returned without freeing storage "fp"

local_ptr_assign_local: Assigning address of stack variable "namebuf" to pointer "filename"
out_of_scope: Variable "namebuf" goes out of scope
use_invalid: Used "filename" pointing to out-of-scope variable "namebuf"

size_error: Allocating 1 bytes to pointer "children", which needs at least 4 bytes

Event alloc_fn: Called allocation function "metacompile" [model]
Event var_assign: Assigned variable "gr" to storage returned from "metacompile"
		gr = metacompile(n);
Event pass_arg: Variable "gr" not freed or pointed-to in function "maketables" [model]
		g = maketables(gr);
  		translatelabels(g);
  		addfirstsets(g);
Event leaked_storage: Returned without freeing storage "gr"
		return g;

var_decl: Declared variable "stm" without initializer
ninit_use_in_call: Using uninitialized value "stm" (field "stm".tm_zone uninitialized) in call to function "mktime"

Added comment about VS 2008 and PGO builds.

- Factor out the duplication of EHLO/HELO in login() and sendmail() to
  a new function, ehlo_or_helo_if_needed().
- Use ehlo_or_helo_if_needed() in starttls()
- Check for the starttls exception in starttls() in the same way as
  login() checks for the auth extension.
Contributed by Bill Fenner.

Fixes issue 829951 - http://bugs.python.org/issue829951