Before SVN r82706 from February 2013 (git a7091d1009), Boost.Move worked perfectly for compilers that supported deleted functions without supporting rvalue references (for example, clang with libstdc++ 4.2.1 on Mac to support OS X 10.6). r82706 broke those setups as temporaries now call the deleted copy constructor instead of the move constructor. This change reverts those setups to the old behavior.
- Changed move_if_noexcept with a single function
- Changed test case to use boost/core/lightweight_test.hpp
- Added boost::is_nothrow_move_constructible<T>::value to is_nothrow_move_constructible_or_uncopyable so types with only a non-throwing move constructor is forwarded with move_if_noexcept.
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