patch 4944 (dynamic access to array size) merged from the 1.0 branch

[[Imported from SVN: r4945]]

common/fixedarray.hh

@@ -126,6 +126,9 @@ namespace Dune
       for (int i=0; i<N; i++) a[i]=t;
     }
 
+    /** \brief Return array size */
+    int size() const {return N;}
+
     //! Assign value to all entries
     FixedArray<T,N>& operator= (const T& t)
     {