attempt to fix build, reintroduce TabitemValue::isLast()

commit 7419057e
Date:   Thu Sep 22 16:34:14 2016 +0200

    loplugin:unusedmethods in chart2..svx

removed that but vcl/unx/kde/salnativewidgets-kde.cxx needs it.

Change-Id: I1ddc98ffafb1f6a1a22642a9a83cc58085cb4271

include/vcl/salnativewidgets.hxx

@@ -420,6 +420,7 @@ class VCL_DLLPUBLIC TabitemValue : public ImplControlValue
         bool isBothAligned() const  { return isLeftAligned() && isRightAligned(); }
         bool isNotAligned() const   { return !(mnAlignment & (TabitemFlags::LeftAligned | TabitemFlags::RightAligned)); }
         bool isFirst() const        { return bool(mnAlignment & TabitemFlags::FirstInGroup); }
+        bool isLast() const         { return bool(mnAlignment & TabitemFlags::LastInGroup); }
         const Rectangle& getContentRect() const { return maContentRect; }
 };