Message 64798 - Python tracker

After thinking some more, I'm going to add 2.6 to this. I'm attaching a
patch for the trunk (it can be merged in Py3k, and maybe 2.5) which
displays a UnicodeWarning when an Exception cannot be displayed due to
encoding issues.

Georg, can you review Amaury's and my patches? Also, would mine be a
candidate for 2.5 backporting?