Important Update:

- FunctionCore/SelectableCore/FileCore/DeviceCore:
  - Remove InputChannels
    - Only OutputChannels -> LinkedChannels
    - Remove PullInput/Output() methods
    - Remove StoredOutput
  - Add References to channels and linked channels
    - Send SourceRef with output
    - Receive TargetRef with input
    - Filter output channels based on TargetRef

FileCore.h

@@ -73,7 +73,7 @@ public:
     virtual bool SetFilePersistence( TFileHandle * FileHandle, bool Persistent, int PersistTimeout );
 
     // Data Input
-    virtual int Input( const char * ChannelName, const char * Data, int Len = -1 );
+    virtual int Input( const char * ChannelName, const char * SourceRef, const char * Data, int Len = -1 );
 
     // Processing data
     virtual bool Process();