Integrate a way to run GDB

[samth]

I have the following script in my bin directory:

#!/bin/bash
gdb  -eval-command "handle SIGSEGV nostop noprint" --eval-command="run" --args $PLTHOME/racket/src/build/racket/racket3m

which is very handy. You can make another one that passes -l drracket as well. I'd like to integrate this with the other launcher goodies here, but I'm not sure of the best way.