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.
diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c
index 725755d..35b8c32 100644
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -654,7 +654,9 @@
 }
 
 PyDoc_STRVAR(decomp_flush__doc__,
-"flush() -- Return a string containing any remaining decompressed data.\n"
+"flush( [length] ) -- Return a string containing any remaining\n"
+"decompressed data. length, if given, is the initial size of the\n"
+"output buffer.\n"
 "\n"
 "The decompressor object can no longer be used after this call.");