version 3.0 introduces a new build-time dependency to opt/gperf.
See [1] for a discussion about the issue.
We've added a simple patch to remove the dependency for now and
added two preprocessed header files. These files are generated
with gperf from the /usr/include/linux/input.h kernel header which
is part of our glibc package.
For the future (CRUX 3.2) we should avoid that and add gperf to
our core collection, not a big deal because it's only one 83K
binary.
[1] https://github.com/gentoo/eudev/issues/75
