[$] A GPL-enforcement update

While there is a lot of software distributed under the terms of the GNUGeneral Public License, there is relatively little enforcement of the termsof that license and, it seems, even less discussion of enforcement ingeneral. Theorganizers of linux.conf.au have never shied away from such topics, though,so Karen Sandler's enforcement update during the linux.conf.au 2018 KernelMiniconf fit right in. The picture she painted includes a number of challenges forthe GPL and the communities based on it, but there are some bright spots aswell.