Galde example and Log scales

Hi, the following seem to work,

    > arctest.py axes_demo.py stock_demo.py

Thanks for the info. I can't replicate the warnings on my system
because I don't have the older pygtk installed, but if I an find an
appropriate test machine I'll see if I can find the source.

    > The color_demo.py fails to run at all with the end of the
    > error message being.

Oops, this was a bug introduced when I changed the color handling in
the abstract drawing interface. In older versions of matplotlib, rgb
tuples were specified as 0-255 ints, now they are 0-1 floats. It's
now fixed in CVS. Thanks for catching it.

John Hunter