two small fixes: const fix in regrree-fmllr code, fix to soft link.

egs/apiai_decode/s5/local/score.sh

@@ -1 +1 @@
-../../wsj/s5/local/score.sh
+../steps/score_kaldi.sh

src/transform/decodable-am-diag-gmm-regtree.h

@@ -97,7 +97,7 @@ class DecodableAmDiagGmmRegtreeMllr: public DecodableAmDiagGmmUnmapped {
                                          trans_model_.TransitionIdToPdf(tid));
   }
 
-  virtual int32 NumFramesReady() { return feature_matrix_.NumRows(); }
+  virtual int32 NumFramesReady() const { return feature_matrix_.NumRows(); }
 
   // Indices are one-based!  This is for compatibility with OpenFst.
   virtual int32 NumIndices() const { return trans_model_.NumTransitionIds(); }