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.

doc/Makefile

@@ -8,7 +8,7 @@
 #
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/doc/Makefile,v 1.15 2000/05/17 16:57:40 momjian Exp $
+#    $Header: /cvsroot/pgsql/doc/Makefile,v 1.16 2000/07/09 13:13:55 petere Exp $
 #
 #----------------------------------------------------------------------------
 
@@ -16,7 +16,6 @@ PGDOCS= $(POSTGRESDIR)/doc
 SRCDIR= ../src
 
 TAR= tar
-GZCAT= zcat
 
 # Pick up Makefile.global from the source area
 # This is the only resource from the code source area and is optional.
@@ -58,7 +57,7 @@ distclean::
 
 man::
 	-@if test ! -d $(POSTMANDIR) ; then mkdir $(POSTMANDIR) ; fi
-	$(GZCAT) man.tar.gz | (cd $(POSTMANDIR) ; $(TAR) xf - )
+	gunzip -c man.tar.gz | (cd $(POSTMANDIR) ; $(TAR) xf - )
 
 #
 # Generic production rules
@@ -75,5 +74,5 @@ man::
 %:	%.tar.gz
 	rm -rf ./$@ $(PGDOCS)/$*
 	if test ! -d $(PGDOCS)/$* ; then mkdir $(PGDOCS)/$* ; fi
-	$(GZCAT) $< | (cd $(PGDOCS)/$* ; $(TAR) xf - )
+	gunzip -c $< | (cd $(PGDOCS)/$* ; $(TAR) xf - )
 #	touch ./$*