Added --no-strict-uid-checking for dmtcp_restart.

Ignore the mismatch in process uid and ckpt image uid.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2233 ba6dc0ae-232f-0410-883f-9ebac64fc565
Updated .gitignore file.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2234 ba6dc0ae-232f-0410-883f-9ebac64fc565