1. Changes the tutorial to refer to BriefReport.

2. Some of the enums have commas at the end.
3. Fix a bug in the default value of circle_fit.cc in the examples.

include/ceres/numeric_diff_cost_function.h

@@ -72,7 +72,7 @@ namespace ceres {
 
 enum NumericDiffMethod {
   CENTRAL,
-  FORWARD,
+  FORWARD
 };
 
 // This is split from the main class because C++ doesn't allow partial template

include/ceres/types.h

@@ -88,7 +88,7 @@ enum LinearSolverType {
   // This is not meant for direct client use; it is used under the
   // hood while using ITERATIVE_SCHUR.  Once there is a decent
   // preconditioner, this will make sense for general sparse problems.
-  CONJUGATE_GRADIENTS,
+  CONJUGATE_GRADIENTS
 };
 
 enum PreconditionerType {
@@ -150,11 +150,11 @@ enum OrderingType {
 // The options get progressively noisier.
 enum LoggingType {
   SILENT,
-  PER_MINIMIZER_ITERATION,
+  PER_MINIMIZER_ITERATION
 };
 
 enum MinimizerType {
-  LEVENBERG_MARQUARDT,
+  LEVENBERG_MARQUARDT
 };
 
 enum SolverTerminationType {
@@ -191,7 +191,7 @@ enum SolverTerminationType {
   USER_ABORT,
 
   // User's IterationCallback returned SOLVER_TERMINATE_SUCCESSFULLY
-  USER_SUCCESS,
+  USER_SUCCESS
 };
 
 // Enums used by the IterationCallback instances to indicate to the