[Crash-utility] crash version 4.0-2.17 is available

- Fix to resurrect LKCD version 8 support, inadvertently broken in 4.0-2.15. (troy.heber(a)hp.com) - Fix for "net -S" failures in certain 2.6 kernels that failed with "net: cannot determine what an inet_sock structure is" message; shows embedded sock structure instead of failing. (anonymous donor) - Fix for erroneous "net -s" source/destination address and port values in certain 2.6 kernels; added "net -s" source/destination address and port values for IPv6 sockets. (anderson(a)redhat.com)