svg export: no more an experimental feature

Removed experimental feature check.
Single slide exporting works as for multi slides exporting.

Change-Id: I3b4f100f5ab9c76896e7f52d65ec27c364216c21

filter/source/svg/svgfilter.cxx

@@ -75,7 +75,7 @@ SVGFilter::SVGFilter( const Reference< XComponentContext >& rxCtx ) :
     mxDefaultPage(),
     maFilterData(),
     maShapeSelection(),
-    mbExportSelection(false),
+    mbExportShapeSelection(false),
     maOldFieldHdl()
 {
 }

filter/source/svg/svgfilter.hxx

@@ -240,7 +240,7 @@ private:
     Sequence< PropertyValue >           maFilterData;
     // #i124608# explicit ShapeSelection for export when export of the selection is wanted
     Reference< XShapes >                maShapeSelection;
-    bool                                mbExportSelection;
+    bool                                mbExportShapeSelection;
     XDrawPageSequence                   mSelectedPages;
     XDrawPageSequence                   mMasterPageTargets;