[libcxx] Fix max_size() across all containers

Summary: The `max_size()` method of containers should respect both the allocator's reported `max_size` and the range of the `difference_type`. This patch makes all containers choose the smallest of those two values.

Reviewers: mclow.lists, EricWF

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26885

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@287729 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/.clang-format b/.clang-format
index 9b3aa8b..28009ef 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1 +1,7 @@
 BasedOnStyle: LLVM
+
+---
+Language: Cpp
+
+AlwaysBreakTemplateDeclarations: true
+---