Modified to dynamically alter colormaps.  Color editor now accepts a command argument and instance pointer to handle what should be done when a color is changed.  Hooks to new, more efficient way of setting colors in plframe added.  Buttons for incremental change of cmap1 position sliders added (except on boundary control points).
Modified to dynamically alter colormaps.  Color editor now accepts a
command argument and instance pointer to handle what should be done when
a color is changed.  Hooks to new, more efficient way of setting colors
in plframe added.  Buttons for incremental change of cmap1 position
sliders added (except on boundary control points).

svn path=/trunk/; revision=860

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