Replace KDE_Q_EXPORT_PLUGIN, KDE_PACKED and KDE_WEAK_SYMBOL with TDE_* equivalent

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 504805a3c3)

src/gvcore/qxcfi.cpp

@@ -2400,6 +2400,6 @@ void XCFImageFormat::dissolveAlphaPixels ( TQImage& image, int x, int y )
   }
 }
 
-KDE_Q_EXPORT_PLUGIN( XCFImageFormat )
+TDE_EXPORT_PLUGIN( XCFImageFormat )
 
 } // namespace