[Pythoncard-users] Message Watcher fix

I updated the Message Watcher in cvs so that when the list starts to get
full it deletes the oldest messages in the list.

The history list doesn't use the wxTE_RICH style, so the current change
(line 117 of debug.py) may have a 1-off error under Linux due to differences
in line ending handling between Windows and Linux. There are some additional
problems with using wxTE_RICH, so if someone can check whether the code
mangles the first line of the history list under Linux I would appreciate
it.

The simplest way to get a lot of content in the Message Watcher is to open
up a sample and uncheck hide unused messages and then just move the mouse
around inside a widget generating a lot of mouseMove messages.

ka