Merging the py3k-pep3137 branch back into the py3k branch. No detailed change log; just check out the change log for the py3k-pep3137 branch. The most obvious changes: - str8 renamed to bytes (PyString at the C level); - bytes renamed to buffer (PyBytes at the C level); - PyString and PyUnicode are no longer compatible. I.e. we now have an immutable bytes type and a mutable bytes type. The behavior of PyString was modified quite a bit, to make it more bytes-like. Some changes are still on the to-do list.

--- a/Python/mactoolboxglue.c	Tue Nov 06 20:51:31 2007 +0000
+++ b/Python/mactoolboxglue.c	Tue Nov 06 21:34:58 2007 +0000
@@ -194,7 +194,7 @@
 PyMac_BuildOSType(OSType t)
 {
 	uint32_t tmp = htonl((uint32_t)t);
-	return PyBytes_FromStringAndSize((char *)&tmp, 4);
+	return PyString_FromStringAndSize((char *)&tmp, 4);
 }
 
 /* Convert an NumVersion value to a 4-element tuple */