data_fitting.cc should include gflags.

Also fix glog/gflag includes and sorting in examples.

Change-Id: Ie07563b99cbb9172c941bb8f5fb7decb95fbb5d1

examples/bal_problem.cc

@@ -34,10 +34,10 @@
 #include <cstdlib>
 #include <string>
 #include <vector>
-#include <glog/logging.h>
+#include "Eigen/Core"
 #include "ceres/random.h"
 #include "ceres/rotation.h"
-#include "Eigen/Core"
+#include "glog/logging.h"
 
 namespace ceres {
 namespace examples {

examples/bundle_adjuster.cc

@@ -58,12 +58,12 @@
 #include <string>
 #include <vector>
 
-#include <gflags/gflags.h>
-#include <glog/logging.h>
 #include "bal_problem.h"
-#include "snavely_reprojection_error.h"
 #include "ceres/ceres.h"
 #include "ceres/random.h"
+#include "gflags/gflags.h"
+#include "glog/logging.h"
+#include "snavely_reprojection_error.h"
 
 DEFINE_string(input, "", "Input File name");
 DEFINE_bool(use_quaternions, false, "If true, uses quaternions to represent "

examples/circle_fit.cc

@@ -53,8 +53,9 @@
 #include <cstdio>
 #include <vector>
 
-#include <gflags/gflags.h>
 #include "ceres/ceres.h"
+#include "gflags/gflags.h"
+#include "glog/logging.h"
 
 using ceres::AutoDiffCostFunction;
 using ceres::CauchyLoss;

examples/data_fitting.cc

@@ -29,6 +29,7 @@
 // Author: sameeragarwal@google.com (Sameer Agarwal)
 
 #include "ceres/ceres.h"
+#include "gflags/gflags.h"
 
 using ceres::AutoDiffCostFunction;
 using ceres::CostFunction;