Split srun/mpirun initital launch logic during restart.


git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2534 ba6dc0ae-232f-0410-883f-9ebac64fc565
Fix dmtcp_restart_script generation code.


git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2535 ba6dc0ae-232f-0410-883f-9ebac64fc565