Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature.

llvm-svn: 113086

llvm-svn: 113061

Configure libc++ to recognize and use inline namespaces for clang.  Many, many thanks to Sebastian Redl for implementing it in clang, and to Daniel Dunbar for rattling my cage about it.  This is huge for libc++.  Thanks to you both\!

llvm-svn: 113026

[futures.atomic_future] and notify_all_at_thread_exit.  This completes the header <future> and all of Chapter 30 (for C++0x enabled compilers).

llvm-svn: 113017

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