Upd libc++ to 18 Jun 2022 ff3989e6ae740a9b3adaad0e2bf7691ffd6dad12

```
[libc++] Add Implemented Papers section
[libc++] Enable -Wweak-vtables
[libc++] Make sure we install libc++abi headers on Apple
[libc++] Don't force -O2 when building the benchmarks
[libc++] Mark standard-mandated includes as such
[libc++] Implement std::boyer_moore{, _horspool}_searcher
[libc++] Unwrap reverse_iterator<reverse_iterator<Iter>> in __unwrap_iter
[libc++] Simplify __config a bit
[libc++][ranges] Implement `ranges::sort`.
[libc++] Remove now-unused experimental/filesystem config file
[libc++] Robust against C++20-hostile iterators
[libc++] Implement ranges::lexicographical_compare
[libc++] Removes unneeded <iterator> includes.
[libcxx] Fix allocator<void>::pointer in C++20 with removed members
[libcxx] Remove extraneous '---' lines in .clang-format files
[libc++][NFCI] span: replace enable_if with concepts
[libc++] Find a clang-format everybody is happy with
[libc++] Use explicit module cache path in tests
[libc++] Remove macros for IBM compiler
```

1 files changed, 12 insertions, 2 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/set b/contrib/libs/cxxsupp/libcxx/include/set
index af035dc6b5..be14a150c2 100644
--- a/contrib/libs/cxxsupp/libcxx/include/set
+++ b/contrib/libs/cxxsupp/libcxx/include/set
@@ -483,10 +483,20 @@ erase_if(multiset<Key, Compare, Allocator>& c, Predicate pred);  // C++20
 #include <__node_handle>
 #include <__tree>
 #include <__utility/forward.h>
+#include <version>
+
+// standard-mandated includes
+
+// [iterator.range]
+#include <__iterator/access.h>
+#include <__iterator/data.h>
+#include <__iterator/empty.h>
+#include <__iterator/reverse_access.h>
+#include <__iterator/size.h>
+
+// [associative.set.syn]
 #include <compare>
 #include <initializer_list>
-#include <iterator> // TODO: Remove this include
-#include <version>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header