Important update:

- Bug fix: make DateTimeCore functions linkable by using it in CLogCore
- CLogCore:
  - Rename FileOutput -> OutputFile
  - Add DateTimeStr to Output if FileNo > 3

LogCore.h

@@ -34,10 +34,10 @@ typedef enum { dlNone = 0, dlLow = 1, dlMedium = 2, dlHigh = 3 } EDebugLevel;
 class CLogCore
 {
 private:
-    FILE * FileOutput;
+    FILE * OutputFile;
 
 public:
-    CLogCore( FILE * pFileOutput );
+    CLogCore( FILE * pOutputFile );
 
     bool Message( EDebugLevel DebugLevel, EDebugLevel MsgLevel, const char * Format, ... );
     bool Output( EDebugLevel DebugLevel, EDebugLevel MsgLevel, const short Show, const char * Buffer, int Len, const char * Format, ... );