Update abseil-cpp to a new upstream

Actually update to bf7fc9986e20f664958fc227547fd8d2fdcf863e

Change #754 didn't completely do this.

This makes the rest of the sources match optional, which was imported at
this change in #1083.

Also add:
  absl/types/optional_test.cc
  absl/types/CMakeLists.txt
  absl/utility/CMakeLists.txt

1 files changed, 17 insertions, 2 deletions

diff --git a/Firestore/third_party/abseil-cpp/absl/numeric/int128_have_intrinsic.inc b/Firestore/third_party/abseil-cpp/absl/numeric/int128_have_intrinsic.inc
index 49bde07..ee2a093 100644
--- a/Firestore/third_party/abseil-cpp/absl/numeric/int128_have_intrinsic.inc
+++ b/Firestore/third_party/abseil-cpp/absl/numeric/int128_have_intrinsic.inc
@@ -1,3 +1,18 @@
-// This file will contain :int128 implementation details that depend on internal
-// representation when ABSL_HAVE_INTRINSIC_INT128 is defined. This file will be
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file contains :int128 implementation details that depend on internal
+// representation when ABSL_HAVE_INTRINSIC_INT128 is defined. This file is
 // included by int128.h.