kern/40014: COMPAT_* broken on everything != x86

[martin%NetBSD.org@localhost]

>Number:         40014
>Category:       kern
>Synopsis:       COMPAT_* broken on everything != x86
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Nov 24 12:00:01 +0000 2008
>Originator:     Martin Husemann
>Release:        NetBSD 5.99.3
>Organization:
The NetBSD Foundation, Inc.
>Environment:

>Description:
Since many #ifdef COMPAT_... turned into hooks but noone handled those
hooks for non x86 archs, many COMPAT_* options are broken in -current.
Example: COMPAT_16 and sendsig_sigcontext_vec is NULL on most archs.

>How-To-Repeat:
watch "sendsig: invalid version 1" messages when running old binaries.

>Fix:
create a list of hooks to fill and tell postmasters about it?