Add back #include <time.h> in a couple of files that seem to need it

on Linux.

src/backend/bootstrap/bootstrap.c

@@ -8,12 +8,13 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.238 2008/01/01 19:45:48 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.239 2008/02/17 04:21:05 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include "postgres.h"
 
+#include <time.h>
 #include <unistd.h>
 #include <signal.h>
 #ifdef HAVE_GETOPT_H

src/backend/tcop/postgres.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.542 2008/01/26 19:55:08 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.543 2008/02/17 04:21:05 tgl Exp $
  *
  * NOTES
  *	  this is the "main" module of the postgres backend and
@@ -19,6 +19,7 @@
 
 #include "postgres.h"
 
+#include <time.h>
 #include <unistd.h>
 #include <signal.h>
 #include <fcntl.h>