Update to 2.4
    
    - New upstream release 2.4
      - Bug fix: for actions followed by multiple expressions (not just one
        arbitrarily complex expression), when multiple expressions become defined
        during the same sequence point, but with different values (e.g. one true,
        another false), depending on the expression order, the action might not be
        taken, when it should be
      - Add -f option to set syslog facility