nis+ auto_home fix...

[Tomoki AONO]

In <Pine.GSO.4.21.0101090132100.4073-100000 at madli.ut.ee>,
tsoome at ut.ee wrote:

>> 2 problems: automount_lookup was declared static, but it's called from
>> lib/substitute.c - result is link failure (solaris 8).

I caught same problem on Solaris 2.4 box (when
--with-automount in configure time). It seems better fix
is to move automount_lookup() and related function
(strip_mount_options()?) into lib/substitute.c (as this
function is not called from any other file)... I think
someone forgot to move this function when lib/substitute.c
is split from lib/util.c .

I don't know whether other part of your fix is correct or
not.
----
Tomoki AONO	(aono at cc.osaka-kyoiku.ac.jp)