linux-headers ============= Contains a copy of Linux UAPI kernel headers. When we build against an older kernel, we may still want to unconditionally build against a certain version of kernel API. These headers should be taken without modification from Linux. Don't include any of these these headers directly, instead include "libnm-std-aux/nm-linux-compat.h" which drags these headers in. This ensures that we include at all places our own patched variant, instead of the system headers.