Fix https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5160 differently:

On Windows, rename inet_pton() to ws_inet_pton() so that builds on Vista or
later systems (that have inet_pton() natively) will still work on pre-Vista
systems.

svn path=/trunk/; revision=34122

wsutil/inet_v6defs.h

@@ -28,6 +28,16 @@
  * Versions of "inet_pton()" and "inet_ntop()", for the benefit of OSes that
  * don't have it.
  */
+
+/*  Windows does not have inet_pton() until Vista.  In order to allow binaries
+ *  compiled on Vista or later to work on pre-Vista Windows (without resorting
+ *  to fragile link ordering tricks), we rename our inet_pton() to
+ *  ws_inet_pton().
+ */
+#ifdef WIN32
+#define inet_pton ws_inet_pton
+#endif
+
 extern int inet_pton(int af, const char *src, void *dst);
 #ifndef HAVE_INET_NTOP_PROTO
 extern const char *inet_ntop(int af, const void *src, char *dst,

wsutil/libwsutil.def

@@ -29,7 +29,8 @@ inet_aton
 inet_ntop
 
 ; inet_pton.c
-inet_pton
+; Note: inet_v6defs.h renames this function for Windows (only)
+ws_inet_pton
 
 ; mpeg-audio.c
 mpa_bitrate