lynx-dev IPv6 fix for 2.8.4dev.9

[sumikawa]

Hello.

lynx-2.8.4dev9 with IPv6 supporting is not buldable on some OSs which
have 'sockaddr.sa_len' such as FreeBSD-4.1.

This caused by that 'SIN6_LEN' checking is put on before including
'netinet/in.h' in WWW/Library/Implementation/www_tcp.h

I've move the IPv6 block to the last of www_tcp.h and checked it works
well. The following is the quick fix. Could you review and merge it?

Thanks,

---
Munechika SUMIKAWA @ KAME Project / FreeBSD.org

---------------------------------------------------------
--- WWW/Library/Implementation/www_tcp.h.orig   Fri Aug 25 10:30:11 2000
+++ WWW/Library/Implementation/www_tcp.h        Mon Sep  4 11:03:13 2000
@@ -56,29 +56,6 @@
 #define INVSOC (-1)             /* Unix invalid socket */
                /* NB: newer libwww has something different for Windows */
 
-/* IPv6 support */
-#if defined(HAVE_GETADDRINFO) && defined(HAVE_GAI_STRERROR) && 
defined(ENABLE_IPV6)
-#      define INET6
-#endif /* HAVE_GETADDRINFO && HAVE_GAI_STRERROR && ENABLE_IPV6 */
-
-#if !defined(__MINGW32__)
-#ifdef INET6
-typedef struct sockaddr_storage SockA;  /* See netinet/in.h */
-#else
-typedef struct sockaddr_in SockA;  /* See netinet/in.h */
-#endif /* INET6 */
-#endif
-
-#ifdef INET6
-#ifdef SIN6_LEN
-#define SOCKADDR_LEN(soc_address) ((struct sockaddr *)&soc_address)->sa_len
-#else
-#define SOCKADDR_LEN(soc_address) SA_LEN((struct sockaddr *)&soc_address)
-#endif /* SIN6_LEN */
-#else
-#define SOCKADDR_LEN(soc_address) sizeof(soc_address)
-#endif /* INET6 */
-
 #ifndef VMS
 
 #include <sys/types.h>
@@ -803,5 +780,28 @@
 #else
 #define set_errno(value) /* we do not know how */
 #endif
+
+/* IPv6 support */
+#if defined(HAVE_GETADDRINFO) && defined(HAVE_GAI_STRERROR) && 
defined(ENABLE_IPV6)
+#      define INET6
+#endif /* HAVE_GETADDRINFO && HAVE_GAI_STRERROR && ENABLE_IPV6 */
+
+#if !defined(__MINGW32__)
+#ifdef INET6
+typedef struct sockaddr_storage SockA;  /* See netinet/in.h */
+#else
+typedef struct sockaddr_in SockA;  /* See netinet/in.h */
+#endif /* INET6 */
+#endif
+
+#ifdef INET6
+#ifdef SIN6_LEN
+#define SOCKADDR_LEN(soc_address) ((struct sockaddr *)&soc_address)->sa_len
+#else
+#define SOCKADDR_LEN(soc_address) SA_LEN((struct sockaddr *)&soc_address)
+#endif /* SIN6_LEN */
+#else
+#define SOCKADDR_LEN(soc_address) sizeof(soc_address)
+#endif /* INET6 */
 
 #endif /* TCP_H */

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