[clang-tools-extra] [llvm] [llvm][ADT] Add wrappers to `std::includes` (PR #143297)

[Jakub Kuderski via llvm-commits]

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@@ -1881,6 +1881,19 @@ OutputIt move(R &&Range, OutputIt Out) {
   return std::move(adl_begin(Range), adl_end(Range), Out);
 }
 
+/// Provide wrappers to std::includes which take ranges instead of having to
+/// pass begin/end explicitly.
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kuhar wrote:

Maybe it would be worth adding a sentence of explanation of what `includes` does -- it's relatively new (c++17) and not immediately familiar to everyone.

https://github.com/llvm/llvm-project/pull/143297