Fix for 2731.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2733 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove banner from dmtcp_{launch,command,restart}.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2734 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove unused '-f' option from coordinator.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2735 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove unused DMT_FORCE_RESTART message.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2736 ba6dc0ae-232f-0410-883f-9ebac64fc565
Added error msg for mtcp_restart, etc.

- To display on wrongful invocation of mtcp_restart, dmtcp_ssh{,d} etc.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2737 ba6dc0ae-232f-0410-883f-9ebac64fc565