dmtcp_restart.cpp: Fix for SharedData file.

- SharedData file was using wrong computation group on restart.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2504 ba6dc0ae-232f-0410-883f-9ebac64fc565
Fix for make check-emacs.

On some systems, "emacs -nw" launches dbus-daemon processes in
background throwing off the number of processes in the computation. The
test thus fails. The fix is to launch emacs-nox, if found. emacs-nox
doesn't launch any background processes.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2505 ba6dc0ae-232f-0410-883f-9ebac64fc565
Consolidate multiple definitions of Area/ProcMapsArea.

include/procmapsarea.h now includes the definition of this struct.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2506 ba6dc0ae-232f-0410-883f-9ebac64fc565
Added --simulate to dmtcp_restart.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2507 ba6dc0ae-232f-0410-883f-9ebac64fc565