Start of the new ordering API.

Change-Id: I37b0f39011f590d54962ad3e1da1f42712008f82
diff --git a/internal/ceres/CMakeLists.txt b/internal/ceres/CMakeLists.txt
index cd4e6ac..862b7cf 100644
--- a/internal/ceres/CMakeLists.txt
+++ b/internal/ceres/CMakeLists.txt
@@ -63,6 +63,7 @@
     local_parameterization.cc
     loss_function.cc
     normal_prior.cc
+    ordering.cc
     partitioned_matrix_view.cc
     polynomial_solver.cc
     problem.cc
@@ -232,6 +233,7 @@
   CERES_TEST(minimizer)
   CERES_TEST(normal_prior)
   CERES_TEST(numeric_diff_cost_function)
+  CERES_TEST(ordering)
   CERES_TEST(parameter_block)
   CERES_TEST(partitioned_matrix_view)
   CERES_TEST(polynomial_solver)