Add support for building httpd_output plugin for win32

src/output/httpd_internal.h

@@ -29,7 +29,12 @@
 
 #include <glib.h>
 
+#ifdef WIN32
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
 #include <sys/socket.h>
+#endif
 #include <stdbool.h>
 
 struct httpd_client;

src/output/httpd_output_plugin.c

@@ -31,8 +31,13 @@
 #include <assert.h>
 
 #include <sys/types.h>
+#ifdef WIN32
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
 #include <netinet/in.h>
 #include <netdb.h>
+#endif
 #include <unistd.h>
 #include <errno.h>