ping-ponging ISC_UNIX changes from J.J.Bailey <jjb@jagware.bcc.com>

add KSR support

declare h_errno in conf.h

woops -- generic vendor paths need to be ifdefed

DG/UX changes

default scanf on; always use /etc/sendmail.cf regardless of vendor
preferences

updates for A/UX

compile glitch with NETLINK

make a bunch of #defines into 0/1 instead of ifdef/ifndef

udpates for NEWS-OS from Motonori Nakamura

fixes for BSDI

changes for ISC_UNIX

sys/mkdev.h seems to be specific to UnixWare

updates for IRIX5 & IRIX6

cleanup for FreeBSD/NetBSD; drop 386BSD

AIX 3 fixes

SVr4 needs <sys/mkdev.h>

UnixWare can use sysconf() instead of getdtablesize

define BSD_COMP on all SVr4 systems

NCR3000 needs explicit include of sys/sockio.h

glitch that causes compile problems (sometimes) on HP-UX

lint

make the maximum number of jobs in one queue run an option

dynmically extend the queue size

include putenv() implementation that doesn't depend on setenv()