kohei03: #i104769# Fixed the chart update problem for real.

My previous fix was not sufficient.  I forgot to:
1) set the "used" flag to the listener when inserting it, which caused
   the listener to get removed right after it was inserted.
2) Set all chart objects "dirty" upon import.  Because of that, the
   timer didn't start when the document initially loaded.

sc/inc/chartlis.hxx

@@ -186,7 +186,7 @@ public:
                              const com::sun::star::uno::Reference< com::sun::star::chart::XChartData >& rSource );
     void            StartTimer();
     void            UpdateDirtyCharts();
-    void            SetDirty();
+    void SC_DLLPUBLIC SetDirty();
     void            SetDiffDirty( const ScChartListenerCollection&,
                         BOOL bSetChartRangeLists = FALSE );
 

sc/source/filter/excel/xichart.cxx

@@ -3575,7 +3575,7 @@ void XclImpChChart::Convert( Reference< XChartDocument > xChartDoc, ScfProgressB
         {
             ::std::auto_ptr<ScChartListener> pListener(
                 new ScChartListener(rObjName, pDoc, pRefTokens.release()));
-            pListener->SetDirty(true);
+            pListener->SetUsed(true);
             pListener->StartListeningTo();
             pChartCollection->Insert(pListener.release());
 

sc/source/filter/excel/xiescher.cxx

@@ -105,6 +105,7 @@
 #include "convuno.hxx"
 #include "postit.hxx"
 #include "globstr.hrc"
+#include "chartlis.hxx"
 
 #include "fprogressbar.hxx"
 #include "xltracer.hxx"
@@ -3755,6 +3756,9 @@ void XclImpObjectManager::ConvertObjects()
                     rDffManager.ProcessDrawing( maDffStrm, *aPIt );
         }
     }
+    ScChartListenerCollection* pChartListeners = GetDoc().GetChartListenerCollection();
+    if (pChartListeners && pChartListeners->GetCount())
+        pChartListeners->SetDirty();
 }
 
 String XclImpObjectManager::GetDefaultObjName( const XclImpDrawObjBase& rDrawObj ) const