new directory for miscellanea

[[Imported from SVN: r2497]]

dune-solvers/common/canignore.hh

+#ifndef CAN_IGNORE_HH
+#define CAN_IGNORE_HH
+
+template <class BitVectorType>
+class CanIgnore
+{
+public:
+
+    /** \brief Default constructor */
+    CanIgnore()
+        : ignoreNodes_(NULL)
+    {}
+
+    /** \brief Virtual destructor.  Does NOT delete the bitfield! */
+    virtual ~CanIgnore()
+    {}
+
+    /** \brief A flag for each degree of freedom stating whether the
+        dof should be ignored by the solver */
+    const BitVectorType* ignoreNodes_;
+
+};
+
+#endif