contour labels

[don t. <dt...@to...>]

I note that the revision to the contour labeling code
in current cvs is a work in progress.  I find two problems:

1. Contours are all drawn with the same linetype even
when they are supposed to have different linetypes.

2. When labels are placed on the actual contour lines
(splot '' with labels), the labels seem very nicely
placed.  Unfortunately, the contours themselves and the
surface are missing.

Attached is a patch that fixes #1. I will leave #2 for
the instigator of the new feature. It is a good one.

Don Taber
dt...@to...