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/timezone/scheck.c

@@ -1,17 +1,9 @@
-#ifndef lint
-#ifndef NOID
-static char	elsieid[] = "@(#)scheck.c	8.15";
-#endif /* !defined lint */
-#endif /* !defined NOID */
-
-/*LINTLIBRARY*/
+#include "postgres.h"
 
 #include "private.h"
 
-char *
-scheck(string, format)
-const char * const	string;
-const char * const	format;
+
+char *scheck(const char *string, const char *format)
 {
 	register char *		fbuf;
 	register const char *	fp;