[RM plugin]

Add MPICH for SLURM test suit



git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2661 ba6dc0ae-232f-0410-883f-9ebac64fc565
[RM plugin]

rearrange test suit



git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2662 ba6dc0ae-232f-0410-883f-9ebac64fc565