Remove 'unused variable' from dt.c

of endian.h.  I figure that if it exists it's pretty sure that it has
the byte order information and we may catch some other ports without
any further testing.

From: "D'Arcy J.M. Cain" <darcy@druid.net>

Thanks to D'Arcy for pointing this one out

include crypt.h in password.c if crypt.h does exist

found

Pointed out by Martin

it.

Pointed out by: Mark Hollomon <mhh@nortel.ca>

Pointed out by: afc@teri.superlink.net

Fixed

Pointed out by: Dave Morrison  (mirrison@mail.phy.ornl.gov)

Essentially, config.h now includes an 'os.h', which is created via
configure by linking a "port.h" file from the port directory to the
include directory.

Going to try to merge backend/port in similar ways

	sigprocmask, setsid and waitpid

Especially for nextstep systems

Awaiting for a context diff from Gregor to complete changes for the nextstep
port

Add a check to configure for strdup
Remove all the '-ltermcap' checks from psql/Makefile
Have {psql,pg_dump}/Makefile modified if strdup doesn't exist on the system

Pointed out by: Erik Bertelsen

Pointed out by D'Arcy

Pointed out by Bruce

Submitted by: Tatsuo Ishii

Remove references to NEED_UNION_SEMUN from include/config.h.in and
from include/storage/ipc.h, replacing it with a single HAVE_UNION_SEMUN

Add CFLAGS= @CPPFLAGS@ to Makefile.global and configure so that build is
	useful for finding extra header files

Split header files from libraries in build.  Doesn't make much sense to
	look for a header file in /usr/local/lib, nor to look for a library
	in /usr/local/include :)

to include inet_aton.c if required

Pointed out by: Darren King

directories to search to find libraries, and then runs ./configure directly

Submitted by: Keith Parks

Cleaned out alot of the #define that can be auto-detect'd by
configure from config.h...

the ports section of Makefile.global as a result.

Right now, it only auto-detects FreeBSD, and the rest still get set
to UNDEFINED, but its a step in the right direction, no?

Autoconf bin/psql/Makefile

configure, thereby reducing the ports dependencies in it :)