Updated unarj packages fix security vulnerability

Buffer overflow in unarj before 2.63a-r2 allows remote attackers to execute arbitrary code via an arj archive that contains long filenames. (CVE-2004-0947) Directory traversal vulnerability in the -x (extract) command line option in unarj allows remote attackers to overwrite arbitrary files via an arj archive with filenames that contain … (dot dot) sequences. (CVE-2004-1027)