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/Lib/traceback.py b/Lib/traceback.py
index 93a64b7..abda422 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -66,7 +66,7 @@
         _print(file,
                '  File "%s", line %d, in %s' % (filename,lineno,name))
         linecache.checkcache(filename)
-        line = linecache.getline(filename, lineno)
+        line = linecache.getline(filename, lineno, f.f_globals)
         if line: _print(file, '    ' + line.strip())
         tb = tb.tb_next
         n = n+1
@@ -98,7 +98,7 @@
         filename = co.co_filename
         name = co.co_name
         linecache.checkcache(filename)
-        line = linecache.getline(filename, lineno)
+        line = linecache.getline(filename, lineno, f.f_globals)
         if line: line = line.strip()
         else: line = None
         list.append((filename, lineno, name, line))
@@ -158,14 +158,14 @@
     """
     list = []
     if (type(etype) == types.ClassType
-        or issubclass(etype, Exception)):
+        or (isinstance(etype, type) and issubclass(etype, Exception))):
         stype = etype.__name__
     else:
         stype = etype
     if value is None:
         list.append(str(stype) + '\n')
     else:
-        if etype is SyntaxError:
+        if issubclass(etype, SyntaxError):
             try:
                 msg, (filename, lineno, offset, line) = value
             except:
@@ -279,7 +279,7 @@
         filename = co.co_filename
         name = co.co_name
         linecache.checkcache(filename)
-        line = linecache.getline(filename, lineno)
+        line = linecache.getline(filename, lineno, f.f_globals)
         if line: line = line.strip()
         else: line = None
         list.append((filename, lineno, name, line))