Log Message:
Update to 5.1.0 provided by Soren Jacobsen PR pkg/23743.

Changes:

5.1.0 (2003-11-09)
        * GNU TLS support (alternative to OpenSSL),
        * Small licence change,
        * Portability fixes (MacOS X)
5.0.1 (2002-11-04)
        * Small bug fixes,
        * Better error messages with invalid options
5.0.0 (2002-10-11)
        * Now uses getnameinfo/getaddrinfo. Two consequences:
           - you can compile only on a recent Unix
           - you have IPv6 support
        * With -v, now able to separate kernel (TCP) and application latency
        * Now displays the standard deviation for repeated tests. Warning:
          this may break some scripts which parse the output of echoping.
4.2.0 (2001-03-16)
        * New -a and -A options to control the proxy/cache (disable caching).
          Fixes bug/wish #232324
        * Support for microsecond wait (uses usleep)
        * New option (-p) to set socket priority (Linux only)
        * New option (-P) to set IP Type of Service octet
        * Bug fixes: #230384 (SSL records are different from text lines)