Regen usermode headers

branches: 1.12.28;
support building on arm

branches: 1.11.6; 1.11.10;
regen

regen

Regen

Regen

Update automatically generated headers

regen

branches: 1.5.2;
Big patch that changes the signal stack usage of urkel significantly.

Formerly, all signals came on the signal stack and the two important ones were
then forwared to either the system call or the pagefault handler. This worked
fine but the signal stack remains that, a stack. When we go multi-process this
stack gets corrupted and out-of-order with all kind of nastyness since a
userland process switch can occure when a system call is called or when a
process gets a page fault.

The new scheme only uses the signal stack as a jumpboard. It swaps states and
then returns from the signal, clearing the stack but instead of returning to
the code it now jumpt to the handler and that handler then returns to the code
when its finished.

branches: 1.4.2;
regen

Instead of doing #include </usr/include/machine/..>, use the headers
that ship with the kernel sources as #include "../../$host/include/$hdr",
and auto-generate these ugly headers with a script.

Drop 3rd and 4th clauses. OK jmcneill (copyright holder).

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.18;
Import work-in-progress NetBSD/usermode port.