Added optimized overloads of the kcentroid object for various

linear kernels.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402957

dlib/svm.h

@@ -6,6 +6,7 @@
 #include "svm/svm.h"
 #include "svm/krls.h"
 #include "svm/kcentroid.h"
+#include "svm/kcentroid_overloads.h"
 #include "svm/kkmeans.h"
 #include "svm/feature_ranking.h"
 #include "svm/rbf_network.h"