Add missing includes.

libguac/include/client-handlers.h

@@ -39,7 +39,7 @@
 #define _GUAC_CLIENT_HANDLERS__H
 
 #include "client.h"
-#include "protocol.h"
+#include "instruction.h"
 
 /**
  * Provides initial handler functions and a lookup structure for automatically

libguac/include/client.h

@@ -41,8 +41,10 @@
 
 #include <stdarg.h>
 
+#include "instruction.h"
+#include "layer.h"
 #include "socket.h"
-#include "protocol.h"
+#include "time.h"
 
 /**
  * Provides functions and structures required for defining (and handling) a proxy client.

libguac/include/plugin.h

@@ -39,6 +39,8 @@
 #ifndef _GUAC_PLUGIN_H
 #define _GUAC_PLUGIN_H
 
+#include "client.h"
+
 /**
  * Provides functions and structures required for handling a client plugin.
  *

libguac/include/protocol.h

@@ -40,7 +40,10 @@
 
 #include <cairo/cairo.h>
 
+#include "layer.h"
+#include "resource.h"
 #include "socket.h"
+#include "time.h"
 
 /**
  * Provides functions and structures required for communicating using the