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.

PC/testpy.py

@@ -5,23 +5,23 @@ import sys
 # change this module too.
 
 try:
-    import string
+    import os
 except:
-    print """Could not import the standard "string" module.
+    print """Could not import the standard "os" module.
   Please check your PYTHONPATH environment variable."""
     sys.exit(1)
 
 try:
-    import regex_syntax
+    import symbol
 except:
-    print """Could not import the standard "regex_syntax" module.  If this is
+    print """Could not import the standard "symbol" module.  If this is
   a PC, you should add the dos_8x3 directory to your PYTHONPATH."""
     sys.exit(1)
 
 import os
 
 for dir in sys.path:
-    file = os.path.join(dir, "string.py")
+    file = os.path.join(dir, "os.py")
     if os.path.isfile(file):
         test = os.path.join(dir, "test")
         if os.path.isdir(test):