Add missing files to the NDK build.

Add reorder_program.cc and also fix an include
error which was only triggered by the NDK build.

Change-Id: Ic800687d1857be1e3d60a44b87595d59e52c1117

internal/ceres/reorder_program.cc

diff --git a/internal/ceres/reorder_program.cc b/internal/ceres/reorder_program.cc
index c1afba7..fa9e1d8 100644
--- a/internal/ceres/reorder_program.cc
+++ b/internal/ceres/reorder_program.cc
@@ -34,19 +34,20 @@
 #include <numeric>
 #include <vector>
 
-#include "glog/logging.h"
 #include "ceres/cxsparse.h"
+#include "ceres/internal/port.h"
 #include "ceres/ordered_groups.h"
+#include "ceres/parameter_block.h"
 #include "ceres/parameter_block_ordering.h"
 #include "ceres/problem_impl.h"
 #include "ceres/program.h"
 #include "ceres/program.h"
+#include "ceres/residual_block.h"
 #include "ceres/solver.h"
 #include "ceres/suitesparse.h"
+#include "ceres/triplet_sparse_matrix.h"
 #include "ceres/types.h"
-#include "ceres/internal/port.h"
-#include "ceres/residual_block.h"
-#include "ceres/parameter_block.h"
+#include "glog/logging.h"
 
 namespace ceres {
 namespace internal {

jni/Android.mk

diff --git a/jni/Android.mk b/jni/Android.mk
index eeeff5f..70680f5 100644
--- a/jni/Android.mk
+++ b/jni/Android.mk
@@ -158,6 +158,7 @@
                    $(CERES_SRC_PATH)/problem.cc \
                    $(CERES_SRC_PATH)/problem_impl.cc \
                    $(CERES_SRC_PATH)/program.cc \
+                   $(CERES_SRC_PATH)/reorder_program.cc \
                    $(CERES_SRC_PATH)/residual_block.cc \
                    $(CERES_SRC_PATH)/residual_block_utils.cc \
                    $(CERES_SRC_PATH)/schur_complement_solver.cc \