Added missing function data_vector to bool specialization. Added corresponding unit tests. closes #451

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@537 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/Utils/Property.hh

@@ -332,6 +332,12 @@ public:
 
 public:
 
+  /// Get reference to property vector (be careful, improper usage, e.g. resizing, may crash OpenMesh!!!)
+  vector_type& data_vector() {
+
+    return data_;
+  }
+
   /// Access the i'th element. No range check is performed!
   reference operator[](int _idx)
   {