Refactored CMakeLists.txt

* new pip_module() macro
 * fixed exports
 * automatic gather all exports and pass them to Doxygen and PICodeParser

lib/main/thread/pithread.h

@@ -243,7 +243,7 @@ protected:
 	PITimeMeasurer tmf_, tms_, tmr_;
 	PIThread::Priority priority_;
 	ThreadFunc ret_func;
-	PRIVATE_DECLARATION
+	PRIVATE_DECLARATION(PIP_EXPORT)
 
 private:
 	bool _startThread(void * func);