Squashed 'subtree/rabit/' changes from 1bb8fe9..4db0a62

4db0a62 bugfix of lazy prepare
87017bd license
dc703e1 license
c171440 change license to bsd
7db2070 Update README.md
581fe06 add mocktest
d2f252f ok
4a5b9e5 add all
12ee049 init version of lbfgs
37a2837 complete lbfgs solver
6ade7cb complete lbfgs

git-subtree-dir: subtree/rabit
git-subtree-split: 4db0a62a06

rabit-learn/kmeans/kmeans.cc

@@ -2,8 +2,8 @@
 // facing an exception
 #include <rabit.h>
 #include <rabit/utils.h>
-#include "./toolkit_util.h"
 #include <time.h>
+#include "../utils/data.h"
 
 using namespace rabit;
 
@@ -83,9 +83,12 @@ inline size_t GetCluster(const Matrix &centroids,
              
 int main(int argc, char *argv[]) {
   if (argc < 5) {
+    // intialize rabit engine
+    rabit::Init(argc, argv);
     if (rabit::GetRank() == 0) {
       rabit::TrackerPrintf("Usage: <data_dir> num_cluster max_iter <out_model>\n");
     }
+    rabit::Finalize();
     return 0;
   }
   clock_t tStart = clock();