QSOE/N, part 2: from a kernel to an operating system

Part 1 ended with Skimmer at v0.5 — a sound microkernel with QNX-shape synchronous IPC, and nothing running on top of it. This post is the rest: how Skimmer became QSOE/N, an actual operating system with processes, a C library, drivers, and a conformance suite that passes a full lap. All of it still in QEMU; real hardware is part 3. The umbrella QSOE — "Quick and Secure Operating Environment" — is…