Two testing script updates: 
Two testing script updates: 

 * Don't setpgrp on child process.  This used to be necessary for MPICH, but now seems to cause problems with MPICH3 mpirun never exiting after Dakota completes.  Will need to see side effects cross-platform.

 * Add option --save-output, which only saves the output of the last test run for now.  Would like to tag output from each subtest, this is just an increment.


git-svn-id: d5469d78598a82f75b3d1e6419ce8b4d1ddac974@3149 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA