Import unmodified NetBSD libc in trunk

This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.

lib/nbsd_libc/sys/timer_create.2

@@ -0,0 +1,119 @@
+.\"	$NetBSD: timer_create.2,v 1.11 2010/05/19 06:44:51 jruoho Exp $
+.\"
+.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Christos Zoulas.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd May 19, 2010
+.Dt TIMER_CREATE 2
+.Os
+.Sh NAME
+.Nm timer_create
+.Nd create a per-process timer
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In time.h
+.In signal.h
+.Ft int
+.Fn timer_create "clockid_t clockid" "struct sigevent * restrict evp" "timer_t * restrict timerid"
+.Sh DESCRIPTION
+The
+.Fn timer_create
+function creates a per-process timer using the clock specified in the
+.Ar clockid
+argument.
+If it succeeds, the
+.Fn timer_create
+function fills in the
+.Ar timerid
+argument with an id associated with the timer created that can be used by
+other timer related calls.
+The
+.Ar clockid
+must be a valid clock id as defined in
+.In time.h .
+The timer is created in a disarmed state.
+.Pp
+An optional
+.Pq non- Ns Dv NULL
+.Em struct sigevent
+argument can be specified by the
+.Ar evp
+argument.
+If the
+.Ar evp
+argument is
+.Dv NULL ,
+then
+.Fa evp-\*[Gt]sigev_notify
+defaults to
+.Dv SIGEV_SIGNAL
+and
+.Fa evp-\*[Gt]sigev_value
+is set to
+.Ar timerid .
+Refer to
+.Xr sigevent 3
+for more details.
+.Sh NOTES
+Timers are not inherited after a
+.Xr fork 2
+and are disarmed and deleted by an
+.Xr exec 3 .
+.Sh RETURN VALUES
+If successful, the
+.Fn timer_create
+function returns 0, and fills in the
+.Ar timerid
+argument with the id of the new timer that was created.
+Otherwise, it returns \-1, and sets
+.Dv errno
+to indicate the error.
+.Sh ERRORS
+The
+.Fn timer_create
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EAGAIN
+The system is out of resources to satisfy this request, or the process has
+created all the timers it is allowed.
+.It Bq Er EINVAL
+The argument
+.Ar clockid
+is not a valid clock id.
+.El
+.Sh SEE ALSO
+.Xr clock_getres 2 ,
+.Xr clock_gettime 2 ,
+.Xr clock_settime 2 ,
+.Xr timer_delete 2 ,
+.Xr timer_getoverrun 2 ,
+.Xr timer_gettime 2 ,
+.Xr timer_settime 2
+.Sh STANDARDS
+.St -p1003.1b-93 ,
+.St -p1003.1i-95