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/_sqlite/cache.h b/Modules/_sqlite/cache.h
new file mode 100644
index 0000000..5cc16f3
--- /dev/null
+++ b/Modules/_sqlite/cache.h
@@ -0,0 +1,61 @@
+/* cache.h - definitions for the LRU cache
+ *
+ * Copyright (C) 2004-2005 Gerhard Häring <gh@ghaering.de>
+ *
+ * This file is part of pysqlite.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#ifndef PYSQLITE_CACHE_H
+#define PYSQLITE_CACHE_H
+#include "Python.h"
+
+typedef struct _Node
+{
+    PyObject_HEAD
+    PyObject* key;
+    PyObject* data;
+    long count;
+    struct _Node* prev;
+    struct _Node* next;
+} Node;
+
+typedef struct
+{
+    PyObject_HEAD
+    int size;
+    PyObject* mapping;
+    PyObject* factory;
+    Node* first;
+    Node* last;
+    int decref_factory;
+} Cache;
+
+extern PyTypeObject NodeType;
+extern PyTypeObject CacheType;
+
+int node_init(Node* self, PyObject* args, PyObject* kwargs);
+void node_dealloc(Node* self);
+
+int cache_init(Cache* self, PyObject* args, PyObject* kwargs);
+void cache_dealloc(Cache* self);
+PyObject* cache_get(Cache* self, PyObject* args);
+
+int cache_setup_types(void);
+
+#endif