Fix memory leak in IB code



git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2792 ba6dc0ae-232f-0410-883f-9ebac64fc565
Fix remote launch script to export SLURMTMPDIR value



git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2793 ba6dc0ae-232f-0410-883f-9ebac64fc565