Merge commit '660e37537636b000eda180f74b3bbaf53e52613b' into master

Upgrade ceres to the 2.0.0 release before starting to use it seriously

Change-Id: I89dd4bb1c1044d9034a254f9e2c4c03952f958a2
diff --git a/third_party/ceres/.clang-format b/third_party/ceres/.clang-format
index 3b22926..21cad9e 100644
--- a/third_party/ceres/.clang-format
+++ b/third_party/ceres/.clang-format
@@ -1,5 +1,7 @@
 BasedOnStyle: Google
+Standard: Cpp11
 BinPackArguments: false
 BinPackParameters: false
 PointerAlignment: Left
 DerivePointerAlignment: false
+CommentPragmas: NOLINT.*