Merge p3yk branch with the trunk up to revision 45595. This breaks a fair

number of tests, all because of the codecs/_multibytecodecs issue described
here (it's not a Py3K issue, just something Py3K discovers):
http://mail.python.org/pipermail/python-dev/2006-April/064051.html

Hye-Shik Chang promised to look for a fix, so no need to fix it here. The
tests that are expected to break are:

test_codecencodings_cn
test_codecencodings_hk
test_codecencodings_jp
test_codecencodings_kr
test_codecencodings_tw
test_codecs
test_multibytecodec

This merge fixes an actual test failure (test_weakref) in this branch,
though, so I believe merging is the right thing to do anyway.

Doc/lib/libdatetime.tex

@@ -504,7 +504,7 @@ Instance methods:
   Return a string representing the date, controlled by an explicit
   format string.  Format codes referring to hours, minutes or seconds
   will see 0 values.
-  See the section on \method{strftime()} behavior.
+  See section~\ref{strftime-behavior} -- \method{strftime()} behavior.
 \end{methoddesc}
 
 
@@ -970,8 +970,8 @@ Instance methods:
 
 \begin{methoddesc}{strftime}{format}
   Return a string representing the date and time, controlled by an
-  explicit format string.  See the section on \method{strftime()}
-  behavior.
+  explicit format string.  See section~\ref{strftime-behavior} --
+  \method{strftime()} behavior.
 \end{methoddesc}
 
 
@@ -1100,7 +1100,8 @@ Instance methods:
 
 \begin{methoddesc}{strftime}{format}
   Return a string representing the time, controlled by an explicit
-  format string.  See the section on \method{strftime()} behavior.
+  format string.  See section~\ref{strftime-behavior} --
+  \method{strftime()} behavior.
 \end{methoddesc}
 
 \begin{methoddesc}{utcoffset}{}
@@ -1368,7 +1369,7 @@ representing only EST (fixed offset -5 hours), or only EDT (fixed offset
 -4 hours)).
 
 
-\subsection{\method{strftime()} Behavior}
+\subsection{\method{strftime()} Behavior\label{strftime-behavior}}
 
 \class{date}, \class{datetime}, and \class{time}
 objects all support a \code{strftime(\var{format})}