We suppose when your rival technology just gives up, as Home Plug has, then it is not big news if you start getting design wins, even from companies who were previously fans of the rival technology. This week it was the turn of Liberty Global to wax lyrical about G.hn over powerline and also join the HomeGrid Forum as a Promoter Member. It is precisely a year since Faultline Online Reporter outed Liberty Global as a widescale user of G.hn, spotting a device on the IBC floor, which it had been shipping as a WiFi extender for several years, but which it omitted to ever announce. Press announcements from HomeGrid are about 3 months apart and often a year or…