Fix glog includes and include sorting order.

Change-Id: I0ec85218e82d1714279d41f7635104d480fb91c3
diff --git a/internal/ceres/normal_prior.cc b/internal/ceres/normal_prior.cc
index f30bbc8..392d728 100644
--- a/internal/ceres/normal_prior.cc
+++ b/internal/ceres/normal_prior.cc
@@ -32,11 +32,10 @@
 
 #include <cstddef>
 #include <vector>
-
-#include <glog/logging.h>
 #include "ceres/internal/eigen.h"
 #include "ceres/internal/scoped_ptr.h"
 #include "ceres/types.h"
+#include "glog/logging.h"
 
 namespace ceres {