Remove a bunch of unused configure tests, in particular cases where

* the result is not recorded anywhere
* the result is not used anywhere
* the result is only used in some places, whereas others have been getting away with it
* the result is used improperly

Also make command line options handling a little better (e.g., --disable-locale,
while redundant, should really still *dis*able).

src/backend/utils/adt/varbit.c

@@ -4,33 +4,27 @@
  *	  Functions for the built-in type bit() and varying bit().
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/varbit.c,v 1.4 2000/07/03 23:09:53 wieck Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/varbit.c,v 1.5 2000/07/12 22:59:09 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
 
+#include "postgres.h"
+
 /* Include file list stolen from float.c.
  * Can probably get rid of some of these.
  * - thomas 2000-04-07
  */
 #include <ctype.h>
 #include <errno.h>
-
 #include <float.h>				/* faked on sunos4 */
-
 #include <math.h>
-
-#include "postgres.h"
-#ifdef HAVE_LIMITS_H
 #include <limits.h>
-#ifndef MAXINT
-#define MAXINT		  INT_MAX
-#endif
-#else
+
 #ifdef HAVE_VALUES_H
 #include <values.h>
 #endif
-#endif
+
 #include "fmgr.h"
 #include "utils/builtins.h"
 #include "utils/varbit.h"