. use netbsd sigframe, sigcontext struct
. netbsd sigframe *contains* sigcontext; use that directly
in kernel sigsend
. drop two fields from minix x86 stackframe.h (process context)
that were unused, retadr and st
use in-sigframe sigcontext
Change-Id: Ib59d699596dc3a78163dee59f19730482fdddf11
. create signals-related struct message type to store sigset_t
directly
. create notify-specific message types, so the generic NOTIFY_ARG
doesn't exist anymore
. various related test expansions, improvements, fixes
. add a few error-checks to sigismember() calls
. rename kernel call specific signals fields to SYS_*
Change-Id: I53c18999b5eaf0cfa0cb25f5330bee9e7ad2b478
