Integrate src/timezone library for all platforms. There is more we can

and should do now that we control our own destiny for timezone handling,
but this commit gets the bulk of the picayune diffs in place.
Magnus Hagander and Tom Lane.

src/backend/tcop/postgres.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.412 2004/05/19 21:17:33 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.413 2004/05/21 05:07:58 tgl Exp $
  *
  * NOTES
  *	  this is the "main" module of the postgres backend and
@@ -21,8 +21,6 @@
 
 #include <unistd.h>
 #include <signal.h>
-#include <time.h>
-#include <sys/time.h>
 #include <fcntl.h>
 #include <sys/socket.h>
 #include <errno.h>
@@ -48,6 +46,7 @@
 #include "optimizer/planner.h"
 #include "parser/analyze.h"
 #include "parser/parser.h"
+#include "pgtime.h"
 #include "rewrite/rewriteHandler.h"
 #include "storage/freespace.h"
 #include "storage/ipc.h"
@@ -2145,7 +2144,7 @@ PostgresMain(int argc, char *argv[], const char *username)
 	char		stack_base;
 	StringInfoData	input_message;
 	volatile bool send_rfq = true;
-
+	
 	/*
 	 * Catch standard options before doing much else.  This even works on
 	 * systems without getopt_long.
@@ -2566,6 +2565,9 @@ PostgresMain(int argc, char *argv[], const char *username)
 	} else
 		ProcessConfigFile(PGC_POSTMASTER);
 
+	/* If timezone is not set, determine what the OS uses */
+	pg_timezone_initialize();
+
 	/*
 	 * Set up signal handlers and masks.
 	 *