Improve portability to FreeBSD 4.

Thanks to: Barry Bouwsma

usr.bin/tar/bsdtar_platform.h

@@ -43,8 +43,10 @@
 #define	HAVE_CHFLAGS		1
 #define	ARCHIVE_STAT_MTIME_NANOS(st)	(st)->st_mtimespec.tv_nsec
 
+#if __FreeBSD_version >= 450002 /* nl_langinfo introduced */
 /* nl_langinfo supports D_MD_ORDER (FreeBSD extension) */
 #define HAVE_NL_LANGINFO_D_MD_ORDER	1
+#endif
 
 #if __FreeBSD__ > 4
 #define	HAVE_GETOPT_LONG	1
@@ -65,6 +67,10 @@
 #define	BSDTAR_FILESIZE_PRINTF	"%llu"
 #endif
 
+#if __FreeBSD__ < 5
+typedef	int64_t	id_t;
+#endif
+
 #endif /*  __FreeBSD__ */
 
 /* No non-FreeBSD platform will have __FBSDID, so just define it here. */