Image popper-upper

[Fred Proctor <frederick.proctor-at-nist.gov>]

EMC folks,

I added the ability to pop up a GIF file when the script starts. Here's
the writeup from the RELEASE_NOTES:

>>>
1. Added the ability to pop up an introductory image for a specified
time. The generic.run script now pulls out the introductory image file
and time it's popped up from:

[DISPLAY]
INTRO_GRAPHIC = <.gif file>
INTRO_TIME = 5

and if the graphic is there, it runs the image viewing script in
emc/src/emctask/popimage.tcl (copied into the plat/XXX/bin directory
as 'popimage'), for the INTRO_TIME, in seconds. Default is 5 seconds.

It pops up right at the beginning, before the subprocesses are run, so
it covers for the dead time before the GUI comes up. The GUI could pop
up its own graphic, but not until after it's run, which takes a
while. This new method pops up an image earlier.

You can point INTRO_GRAPHIC to whatever you want. There is a default
image, emcintro.gif, in the emc/ directory. It's really lame to entice
you to create and submit your own.
<<<

The new stuff is: mods to generic.run; emc/src/emctask/popimage.tcl.
It's not released yet pending some comments on how to number the EMC
releases. It's up on SourceForge.

--Fred