Added older release notes to NEWS files.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2449 ba6dc0ae-232f-0410-883f-9ebac64fc565
Minor fix for posix mq_open test in configure.ac.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2450 ba6dc0ae-232f-0410-883f-9ebac64fc565