lib: use correct printf flags for sockets and timediffs

Introduces CURL_FORMAT_SOCKET_T for outputting socket numbers.

Fixes #10737
Reported-by: Gisle Vanem
Closes #10855

lib/cf-socket.h

@@ -34,6 +34,23 @@ struct Curl_easy;
 struct connectdata;
 struct Curl_sockaddr_ex;
 
+#ifndef SIZEOF_CURL_SOCKET_T
+/* configure and cmake check and set the define */
+# ifdef _WIN64
+#  define SIZEOF_CURL_SOCKET_T 8
+# else
+/* default guess */
+#  define SIZEOF_CURL_SOCKET_T 4
+# endif
+#endif
+
+#if SIZEOF_CURL_SOCKET_T < 8
+# define CURL_FORMAT_SOCKET_T "d"
+#else
+# define CURL_FORMAT_SOCKET_T "qd"
+#endif
+
+
 /*
  * The Curl_sockaddr_ex structure is basically libcurl's external API
  * curl_sockaddr structure with enough space available to directly hold any