Matchers

Two "matchers" structs removed from wolf.h and declared in separate files. Update includes needing them accordingly.

src/feature_match.h

+#ifndef FEATURE_MATCH_H_
+#define FEATURE_MATCH_H_
+
+// Wolf includes
+#include "wolf.h"
+
+//wolf nampseace
+namespace wolf {
+    
+/** \brief Match between a feature and a feature
+ *
+ * Match between a feature and a feature (feature-feature correspondence)
+ *
+ **/
+struct FeatureMatch
+{
+        FeatureBasePtr feature_ptr_;
+        Scalar normalized_score_;
+};
+
+typedef std::map<FeatureBasePtr, FeatureMatch> FeatureMatchMap;
+
+}//end namespace
+
+#endif
+
+