Add execute permission or autogen.sh.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2600 ba6dc0ae-232f-0410-883f-9ebac64fc565
Ran autogen.sh to regenerate configure script.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2601 ba6dc0ae-232f-0410-883f-9ebac64fc565
Added --run-as-root for dmtcp_restart.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2602 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove --enable-run-as-root configure option.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2603 ba6dc0ae-232f-0410-883f-9ebac64fc565
Remove --disable-pid-virtualization configure option.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2604 ba6dc0ae-232f-0410-883f-9ebac64fc565