* pty.c renamed to pyt1.c ; sv-shm[12].c renamed to sysv-shm[12].c
* pty2.c added to check if sid, pgid termios, etc., are all same on restart.
* autotest.py updated.  (tests for pty[12] are still commented out)


git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1820 ba6dc0ae-232f-0410-883f-9ebac64fc565
Addendum to r1816.

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1821 ba6dc0ae-232f-0410-883f-9ebac64fc565
Minor fixes for SharedData.

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1822 ba6dc0ae-232f-0410-883f-9ebac64fc565
PID plugin: Added wrapper or tcgetsid().

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1823 ba6dc0ae-232f-0410-883f-9ebac64fc565
DMTCP_EVENT_WRITE_CKPT_PREFIX removed.

SysVIPC: replace _real_getpid() with getpid().

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1824 ba6dc0ae-232f-0410-883f-9ebac64fc565
Restore process group and session info.

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1825 ba6dc0ae-232f-0410-883f-9ebac64fc565
Enable pty2 test.

git-svn-id: https://dmtcp.svn.sourceforge.net/svnroot/dmtcp/trunk@1826 ba6dc0ae-232f-0410-883f-9ebac64fc565