update to latest upstream release
    
    Resolves: CVE-2018-1100 - stack-based buffer overflow in utils.c:checkmailpath()
    Resolves: CVE-2018-1083 - stack-based buffer overflow in compctl.c:gen_matches_files()
    Resolves: CVE-2018-1071 - stack-based buffer overflow in exec.c:hashcmd()