adds missing include in zend_strtod.c (caused build to fail on sparc)

--- php-5.0.3/Zend/zend_strtod.c~	2004-12-14 09:41:35.000000000 +0100
+++ php-5.0.3/Zend/zend_strtod.c	2004-12-21 08:45:10.050119856 +0100
@@ -90,6 +90,7 @@
  */
 
 #include <zend_strtod.h>
+#include <stdint.h>
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char *rcsid = "$OpenBSD: strtod.c,v 1.19 2004/02/03 16:52:11 drahn Exp $";