Alternative for SixaxisPairTool and sixaxispairer

[biemster]

The link to SixaxisPairTool seems to have gone all scammy, and sixaxispairer has a dependency that is no longer available at the link provided in that repo. I've found and (ancient) alternative here: http://www.pabr.org/sixlinux, for people that might be searching like I did. It might be even an idea to add sixpair.c to this repo, as to not lose it.