add FreeRTOS support for PIThread PIMutex PIConditionVariable

libs/main/thread/pithread.h

@@ -30,6 +30,8 @@
 #include "piobject.h"
 
 class PIThread;
+
+#ifndef MICRO_PIP
 class PIIntrospectionThreads;
 
 class PIP_EXPORT __PIThreadCollection: public PIObject {
@@ -58,14 +60,16 @@ public:
 };
 
 static __PIThreadCollection_Initializer__ __PIThreadCollection_initializer__;
-
+#endif // MICRO_PIP
 
 typedef std::function<void(void *)> ThreadFunc;
 
 class PIP_EXPORT PIThread: public PIObject
 {
 	PIOBJECT_SUBCLASS(PIThread, PIObject)
+#ifndef MICRO_PIP
 	friend class PIIntrospectionThreads;
+#endif
 public:
 	NO_COPY_CLASS(PIThread)