[changeset] - improve clf() compatibility

[John W. Eaton]

On 21-Oct-2008, John W. Eaton wrote:

| * Try
| 
|     demo quiver3
|     demo ribbon
| 
|   Both of these seem to work OK if run separately in fresh Octave
|   sessions, but quiver3 seems to be leaving some state that causes
|   ribbon to do the wrong thing.  Maybe this is a hold problem?  I
|   haven't looked at it yet.

OK, this one was trivial.  I applied the following patch.

jwe

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