#4 Seg. fault/Postcript gen/datacmd fixes

[Marcelo Matus]

This patch has been generated for the CVS repository
(Wed Aug 22 23:45:15 MST 2001) and
includes:

1.- A fix for a segmentation fault error that appears
when an uninitialized index is used at bltGrPs.c

2.- A strange box that appears around the 'x' axis when
the data is send to a postscript file, related to the
SegmentToPostscript routine.

3.- Reduction of the segments generated in the postscript
file for dense line elements.

4.- The return of the datacommand option code, so now
it works for the repository version (and with -O6 too).

You can use it for example as:

proc datacmd { graph } {
$graph postscript output <filename>
....
}

$graph configure -datacommand datacmd

5.- Reduction of the events generated when more
than one vector dispatch a data changed events.

matus@acms.arizona.edu

[Marcelo Matus]

Patch against the CVS repository (Wed Aug 22 23:45:15 MST 2001)