Update to V4.6.1 - including PIC32MX port.

Source/include/queue.h

@@ -1,5 +1,5 @@
 /*
-	FreeRTOS.org V4.6.0 - Copyright (C) 2003-2007 Richard Barry.
+	FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
 
 	This file is part of the FreeRTOS.org distribution.
 
@@ -28,14 +28,18 @@
 	and contact details.  Please ensure to read the configuration and relevant
 	port sections of the online documentation.
 
-	Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along
-	with commercial development and support options.
+	Also see http://www.SafeRTOS.com a version that has been certified for use
+	in safety critical systems, plus commercial licensing, development and
+	support options.
 	***************************************************************************
 */
 
 #ifndef QUEUE_H
 #define QUEUE_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 typedef void * xQueueHandle;
 
 /* For internal use only. */
@@ -1176,5 +1180,9 @@ signed portBASE_TYPE xQueueCRReceive( xQueueHandle pxQueue, void *pvBuffer, port
  */
 xQueueHandle xQueueCreateMutex( void );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* QUEUE_H */