Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Fix compilation warnings (up to level 3).

Resolve merge conflicts.

make prototpyes match functions, and declare things static as needed

remove __P

Fix merge conflicts, and because this still has a zillion warnings,
protect the build with a WARNS=2.

Fix the build.

Use STD{ERR,IN,OUT}_FILENO instead of their numeric values. The
definitions are more readable, and it's possible that they're
more portable to pathalogical platforms.

Submitted by: David Hill <david@phobia.ms>

#include <errno.h> where needed. Kill extern int errno;.

Minor warnings in tip corrected.

$Id$ -> $FreeBSD$

Many places in the code NULL is used in integer context, where
plain 0 should be used. This happens to work because we #define
NULL to 0, but is stylistically wrong and can cause problems
for people trying to port bits of code to other environments.

PR: 2752
Submitted by: Arne Henrik Juul <arnej@imf.unit.no>

Add prototypes, usage(). Use err(3).

Here's a patch that fixes the problem with modem syncronization
problems with tip. There are some hardwired timeouts that ignores the
delay that you can set in the modem configuration file. The hard-wire
delay is to short if the modem has to switch major modes and reset
(ie going from fax to data mode with a reset).

Now my modem transistions from HylaFax control to tip control and ppp mode
without any problems.

Submitted by: Douglas Ambrisko <ambrisko@tcs.com>

Remove trailing whitespace.

Fix nested comments for -Wcomment warnings.

Greatly clean up the Makefiles and add a Makefile.inc to more obviously
advertise tip's choice of location and perms.

I must have been very sleepy last night, sigh..
1. Nuke out the aculib files that crept in somehow by mistake.
2. Fix the ${.CURDIR} path so that this stuff actually compiles.
It actually compiled for me before the commit, but I must have had
something short-cutting the bug.

Tom Gray's new tip changes to support a modem capabilities database and
fixes to many assorted bugs and misfeatures.
Submitted by: Tom Gray - DCA <dcasba@rain.org>