[Changeset] plotyy leaves traces of previous plots

[John W. Eaton]

On 31-Mar-2008, David Bateman wrote:

| David Bateman wrote:
| > In any case, even if you don't accept the changeset completely, the
| > change to __go_draw_axes__ should be applied as it fixes the issue of
| > the duplicated tics in plotyy windows.
| 
| 
| Here is a changeset of the bit that should be committed that doesn't
| affect the newplot issues.

I applied it.

Thanks,

jwe