Fix mmdb library on Windows and use it by default

Makefile.windows

@@ -275,6 +275,7 @@ DLL_FILES=\
  src/modules/geoip_base.dll \
  src/modules/geoip_classic.dll \
  src/modules/geoip_csv.dll \
+ src/modules/geoip_mmdb.dll \
  src/modules/geoip-tag.dll \
  src/modules/globops.dll \
  src/modules/help.dll \

include/mmdb.h

@@ -33,8 +33,11 @@
 #include <stddef.h>
 
 #ifdef _WIN32
-#include <winsock2.h>
-#include <ws2tcpip.h>
+ #ifndef _WIN32_WINNT
+  #define _WIN32_WINNT 0x0601
+ #endif
+ #include <winsock2.h>
+ #include <ws2tcpip.h>
 #else
 #include <sys/socket.h>
 #include <netinet/in.h>

include/windows/setup.h

@@ -63,7 +63,7 @@
 #define _WIN32_WINNT 0x0601
 
 /* What geoip engine to use */
-#define GEOIP_ENGINE "geoip_classic"
+#define GEOIP_ENGINE "geoip_mmdb"
 
 /* Generation version number (e.g.: 3 for Unreal3*) */
 #define UNREAL_VERSION_GENERATION 6