Added --infiniband flag to dmtcp_launch.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2419 ba6dc0ae-232f-0410-883f-9ebac64fc565
MTCP: Replace mtcp_safemmap with mtcp_sys_mmap.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2420 ba6dc0ae-232f-0410-883f-9ebac64fc565