buildroot

tcpreplay: bump version to 4.0.0

Update the tcpreplay package to version 4.0.0. The upstream package has
a new maintainer and license. Version 4.0.0 brings a number of new
features see http://tcpreplay.appneta.com/ for details.

[Peter: drop autoreconf]
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>