added some code to handle the set of environment variable that should be defined for the job.
added some code to handle the set of environment variable that should be defined for the job.

globus/globus-toolkit,ellert/globus-toolkit,gridcf/gct,gridcf/gct,gridcf/gct,gridcf/gct,ellert/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,gridcf/gct,gridcf/gct,globus/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit