scalegrid: changed the command line option
-discardvtags to -writevtags so the default action is to not write the
volume tag information to the output grid
surftool: added command line option -offset_tag [#]
to offset the surface id by the given offset for the specified surfaces
Bugs Fixed:
Corrected problems with un-pickinginterior points on curves and surfaces.
Corrected problems with the surface and volume weather map display.
Corrected the parametric curve representation extracted from
CAPRI geometry.