Another round of those unportable config/build changes :-/

* Add option to build with OpenSSL out of the box. Fix thusly exposed
  bit rot. Although it compiles now, getting this to do something
  useful is left as an exercise.

* Fix Kerberos options to defer checking for required libraries until
  all the other libraries are checked for.

* Change default odbcinst.ini and krb5.srvtab path to PREFIX/etc.

* Install work around for Autoconf's install-sh relative path anomaly.
  Get rid of old INSTL_*_OPTS variables, now that we don't need them
  anymore.

* Use `gunzip -c' instead of g?zcat. Reportedly broke on AIX.

* Look for only one of readline.h or readline/readline.h, not both.

* Make check for PS_STRINGS cacheable. Don't test for the header files
  separately.

* Disable fcntl(F_SETLK) test on Linux.

* Substitute the standard GCC warnings set into CFLAGS in configure,
  don't add it on in Makefile.global.

* Sweep through contrib tree to teach makefiles standard semantics.

... and in completely unrelated news:

* Make postmaster.opts arbitrary options-aware. I still think we need to
  save the environment as well.

contrib/linux/Makefile

@@ -1,40 +0,0 @@
-#
-# $Header: /cvsroot/pgsql/contrib/linux/Attic/Makefile,v 1.2 2000/06/19 13:53:41 momjian Exp $
-#
-
-TOPDIR=../..
-
-include ../Makefile.global
-
-NAME	= 
-
-PROGRAM	= 
-OBJS	= 
-DOCS	= 
-SQLS	= 
-BINS	=
-BINS    = postgres.init.csh postgres.init.sh
-
-EXAMPLES=
-MODS	= 
-
-OTHER_CLEAN = 
-
-all: 
-
-install: install_bin
-
-install_bin:
-	for inst_file in $(BINS); do \
-		$(INSTALL) $(INSTL_EXE_OPTS) $$inst_file $(CONTRIB_BINDIR); \
-	done
-
-depend dep:
-	$(CC) -MM -MG $(CFLAGS) *.c > depend
-
-clean:
-	$(RM) *~ $(OBJS) $(MODS) $(PROGRAM) depend $(OTHER_CLEAN) core log
-
-ifeq (depend,$(wildcard depend))
-include depend
-endif