Mold (linker) 1.0 released

gold had significantly higher memory usage than GNU ld, didn't run all that much faster in the places I used it hoping for a speedup, and was sometimes buggy in ways that would manifest as its output binaries malfunctioning late into runtime which was a nightmare to track down.

And above all, we're talking about it in past tense because it's another abandonware Google product. Not a good look for an essential toolchain component.