Remove getopt configure check.

src/configure.in

@@ -582,7 +582,6 @@ AC_CHECK_HEADERS(dld.h)
 AC_CHECK_HEADERS(endian.h)
 AC_CHECK_HEADERS(float.h)
 AC_CHECK_HEADERS(fp_class.h)
-AC_CHECK_HEADERS(getopt.h)
 AC_CHECK_HEADERS(history.h)
 AC_CHECK_HEADERS(ieeefp.h)
 AC_CHECK_HEADERS(limits.h)

src/include/config.h.in

@@ -235,9 +235,6 @@
 /* Set to 1 if you have <fp_class.h> */
 #undef HAVE_FP_CLASS_H
 
-/* Set to 1 if you have <fp_class.h> */
-#undef HAVE_GETOPT
-
 /* Set to 1 if you have <history.h> */
 #undef HAVE_HISTORY_H
 

src/interfaces/ecpg/preproc/ecpg.c

@@ -2,14 +2,11 @@
 /* (C) Michael Meskes <meskes@debian.org> Feb 5th, 1998 */
 /* Placed under the same copyright as PostgresSQL */
 
+#include <unistd.h>
 #include "postgres.h"
 
-#ifdef HAVE_GETOPT_H
-#include <getopt.h>
-#else
-#include <unistd.h>
-extern int	optind;
-extern char *optarg;
+#ifdef __CYGWIN32__
+#include "getopt.h"
 #endif
 
 #include "extern.h"